systemd-resolved: Using degraded feature set TCP instead of UDP for DNS server
by DBabo from LinuxQuestions.org on (#5GEW1)
Hello,
some 2-3 weeks ago Fedora 33 ( weeklish updated) started to lose connection. Mostly during the night - thus i didn't pay much attention initially. Today (Sun) the network was down from the morning - i was forced to actually pay attention.
All other devices - phones, Ms laptop have been operational all this time.
After some DuckDucking, I narrowed the issue down to "systemd-resolved" conflicting(?) with NetworkManager.
To have a network working, I have to stop the service. BUT I wonder what is the root cause of the issue. And why it started to manifest over the past few weeks, whereas networking was fine for many months prior...
Here is the relevant information I can think of :
Code:[root@dell5000 ~]# cat /etc/NetworkManager/NetworkManager.conf | grep -v '#'
[main]
[logging]
Code:[root@dell5000 ~]# cat /etc/systemd/resolved.conf
# This file is part of systemd.
#
# systemd is free software; you can redistribute it and/or modify it
# under the terms of the GNU Lesser General Public License as published by
# the Free Software Foundation; either version 2.1 of the License, or
# (at your option) any later version.
#
# Entries in this file show the compile time defaults.
# You can change settings by editing this file.
# Defaults can be restored by simply deleting this file.
#
# See resolved.conf(5) for details
[Resolve]
# Some examples of DNS servers which may be used for DNS= and FallbackDNS=:
# Cloudflare: 1.1.1.1 1.0.0.1 2606:4700:4700::1111 2606:4700:4700::1001
# Google: 8.8.8.8 8.8.4.4 2001:4860:4860::8888 2001:4860:4860::8844
# Quad9: 9.9.9.9 2620:fe::fe
DNS=1.1.1.1 1.0.0.1
#FallbackDNS=
#Domains=
DNSSEC=no
#DNSOverTLS=no
#MulticastDNS=no
#LLMNR=resolve
#Cache=yes
#DNSStubListener=yes
#ReadEtcHosts=yes
#ResolveUnicastSingleLabel=no
Code:[root@dell5000 ~]# systemctl status systemd-resolved
systemd-resolved.service - Network Name Resolution
Loaded: loaded (/usr/lib/systemd/system/systemd-resolved.service; enabled; vendor preset: enabled)
Active: active (running) since Sun 2021-04-11 12:15:28 EDT; 1min 2s ago
Docs: man:systemd-resolved.service(8)
https://www.freedesktop.org/wiki/Software/systemd/resolved
https://www.freedesktop.org/wiki/Software/systemd/writing-network-configuration-managers
https://www.freedesktop.org/wiki/Software/systemd/writing-resolver-clients
Main PID: 5274 (systemd-resolve)
Status: "Processing requests..."
Tasks: 1 (limit: 9394)
Memory: 7.3M
CGroup: /system.slice/systemd-resolved.service
5274 /usr/lib/systemd/systemd-resolved
Apr 11 12:16:11 dell5000 systemd-resolved[5274]: Using degraded feature set TCP instead of UDP for DNS server 1.0.0.1.
Apr 11 12:16:13 dell5000 systemd-resolved[5274]: Using degraded feature set UDP instead of TCP for DNS server 1.0.0.1.
Apr 11 12:16:14 dell5000 systemd-resolved[5274]: Using degraded feature set TCP instead of UDP for DNS server 1.0.0.1.
Apr 11 12:16:14 dell5000 systemd-resolved[5274]: Using degraded feature set TCP instead of UDP for DNS server 1.1.1.1.
Apr 11 12:16:17 dell5000 systemd-resolved[5274]: Using degraded feature set UDP instead of TCP for DNS server 1.1.1.1.
Apr 11 12:16:18 dell5000 systemd-resolved[5274]: Using degraded feature set TCP instead of UDP for DNS server 1.1.1.1.
Apr 11 12:16:22 dell5000 systemd-resolved[5274]: Using degraded feature set UDP instead of TCP for DNS server 1.0.0.1.
Apr 11 12:16:25 dell5000 systemd-resolved[5274]: Using degraded feature set UDP instead of TCP for DNS server 1.1.1.1.
Apr 11 12:16:28 dell5000 systemd-resolved[5274]: Using degraded feature set TCP instead of UDP for DNS server 1.0.0.1.The moment I stop the service I regain the connection.
Below is the log of what was happening before and after the service was brought down.
Code:Apr 11 12:15:20 dell5000 kernel: r8169 0000:07:00.0 enp7s0: Link is Down
Apr 11 12:15:20 dell5000 NetworkManager[5096]: <info> [1618157720.9225] device (enp7s0): state change: prepare -> config (reason 'none', sys-iface-state: 'managed')
Apr 11 12:15:20 dell5000 NetworkManager[5096]: <info> [1618157720.9389] device (enp7s0): state change: config -> ip-config (reason 'none', sys-iface-state: 'managed')
Apr 11 12:15:20 dell5000 NetworkManager[5096]: <info> [1618157720.9402] dhcp4 (enp7s0): activation: beginning transaction (timeout in 45 seconds)
Apr 11 12:15:20 dell5000 avahi-daemon[907]: Joining mDNS multicast group on interface enp7s0.IPv4 with address 192.168.1.10.
Apr 11 12:15:20 dell5000 avahi-daemon[907]: New relevant interface enp7s0.IPv4 for mDNS.
Apr 11 12:15:20 dell5000 avahi-daemon[907]: Registering new address record for 192.168.1.10 on enp7s0.IPv4.
Apr 11 12:15:20 dell5000 avahi-daemon[907]: Joining mDNS multicast group on interface enp7s0.IPv6 with address fe80::33ae:74a6:97a1:aeec.
Apr 11 12:15:20 dell5000 avahi-daemon[907]: New relevant interface enp7s0.IPv6 for mDNS.
Apr 11 12:15:20 dell5000 avahi-daemon[907]: Registering new address record for fe80::33ae:74a6:97a1:aeec on enp7s0.*.
Apr 11 12:15:22 dell5000 kernel: r8169 0000:07:00.0 enp7s0: Link is Up - 100Mbps/Full - flow control rx/tx
Apr 11 12:15:22 dell5000 NetworkManager[5096]: <info> [1618157722.5788] device (enp7s0): carrier: link connected
Apr 11 12:15:28 dell5000 NetworkManager[5096]: <info> [1618157728.5783] dhcp4 (enp7s0): option dhcp_lease_time => '86400'
Apr 11 12:15:28 dell5000 NetworkManager[5096]: <info> [1618157728.5784] dhcp4 (enp7s0): option domain_name_servers => '192.168.1.1'
Apr 11 12:15:28 dell5000 NetworkManager[5096]: <info> [1618157728.5784] dhcp4 (enp7s0): option expiry => '1618244126'
Apr 11 12:15:28 dell5000 NetworkManager[5096]: <info> [1618157728.5785] dhcp4 (enp7s0): option host_name => 'dell5000'
Apr 11 12:15:28 dell5000 NetworkManager[5096]: <info> [1618157728.5785] dhcp4 (enp7s0): option ip_address => '192.168.1.132'
Apr 11 12:15:28 dell5000 NetworkManager[5096]: <info> [1618157728.5785] dhcp4 (enp7s0): option next_server => '192.168.1.1'
Apr 11 12:15:28 dell5000 NetworkManager[5096]: <info> [1618157728.5786] dhcp4 (enp7s0): option requested_broadcast_address => '1'
Apr 11 12:15:28 dell5000 NetworkManager[5096]: <info> [1618157728.5786] dhcp4 (enp7s0): option requested_domain_name => '1'
Apr 11 12:15:28 dell5000 NetworkManager[5096]: <info> [1618157728.5786] dhcp4 (enp7s0): option requested_domain_name_servers => '1'
Apr 11 12:15:28 dell5000 NetworkManager[5096]: <info> [1618157728.5786] dhcp4 (enp7s0): option requested_domain_search => '1'
Apr 11 12:15:28 dell5000 NetworkManager[5096]: <info> [1618157728.5786] dhcp4 (enp7s0): option requested_host_name => '1'
Apr 11 12:15:28 dell5000 NetworkManager[5096]: <info> [1618157728.5787] dhcp4 (enp7s0): option requested_interface_mtu => '1'
Apr 11 12:15:28 dell5000 NetworkManager[5096]: <info> [1618157728.5787] dhcp4 (enp7s0): option requested_ms_classless_static_routes => '1'
Apr 11 12:15:28 dell5000 NetworkManager[5096]: <info> [1618157728.5787] dhcp4 (enp7s0): option requested_nis_domain => '1'
Apr 11 12:15:28 dell5000 NetworkManager[5096]: <info> [1618157728.5787] dhcp4 (enp7s0): option requested_nis_servers => '1'
Apr 11 12:15:28 dell5000 NetworkManager[5096]: <info> [1618157728.5787] dhcp4 (enp7s0): option requested_ntp_servers => '1'
Apr 11 12:15:28 dell5000 NetworkManager[5096]: <info> [1618157728.5788] dhcp4 (enp7s0): option requested_rfc3442_classless_static_routes => '1'
Apr 11 12:15:28 dell5000 NetworkManager[5096]: <info> [1618157728.5788] dhcp4 (enp7s0): option requested_root_path => '1'
Apr 11 12:15:28 dell5000 NetworkManager[5096]: <info> [1618157728.5788] dhcp4 (enp7s0): option requested_routers => '1'
Apr 11 12:15:28 dell5000 NetworkManager[5096]: <info> [1618157728.5788] dhcp4 (enp7s0): option requested_static_routes => '1'
Apr 11 12:15:28 dell5000 NetworkManager[5096]: <info> [1618157728.5788] dhcp4 (enp7s0): option requested_subnet_mask => '1'
Apr 11 12:15:28 dell5000 NetworkManager[5096]: <info> [1618157728.5789] dhcp4 (enp7s0): option requested_time_offset => '1'
Apr 11 12:15:28 dell5000 avahi-daemon[907]: Withdrawing address record for 192.168.1.10 on enp7s0.
Apr 11 12:15:28 dell5000 NetworkManager[5096]: <info> [1618157728.5789] dhcp4 (enp7s0): option requested_wpad => '1'
Apr 11 12:15:28 dell5000 avahi-daemon[907]: Leaving mDNS multicast group on interface enp7s0.IPv4 with address 192.168.1.10.
Apr 11 12:15:28 dell5000 NetworkManager[5096]: <info> [1618157728.5789] dhcp4 (enp7s0): option routers => '192.168.1.1'
Apr 11 12:15:28 dell5000 avahi-daemon[907]: Interface enp7s0.IPv4 no longer relevant for mDNS.
Apr 11 12:15:28 dell5000 NetworkManager[5096]: <info> [1618157728.5789] dhcp4 (enp7s0): option subnet_mask => '255.255.255.0'
Apr 11 12:15:28 dell5000 avahi-daemon[907]: Joining mDNS multicast group on interface enp7s0.IPv4 with address 192.168.1.132.
Apr 11 12:15:28 dell5000 NetworkManager[5096]: <info> [1618157728.5790] dhcp4 (enp7s0): state changed unknown -> bound
Apr 11 12:15:28 dell5000 avahi-daemon[907]: New relevant interface enp7s0.IPv4 for mDNS.
Apr 11 12:15:28 dell5000 avahi-daemon[907]: Registering new address record for 192.168.1.132 on enp7s0.IPv4.
Apr 11 12:15:28 dell5000 avahi-daemon[907]: Registering new address record for 192.168.1.10 on enp7s0.IPv4.
Apr 11 12:15:28 dell5000 NetworkManager[5096]: <info> [1618157728.5890] device (enp7s0): state change: ip-config -> ip-check (reason 'none', sys-iface-state: 'managed')
Apr 11 12:15:28 dell5000 systemd[1]: Starting Network Manager Script Dispatcher Service...
Apr 11 12:15:28 dell5000 systemd[1]: Started Network Manager Script Dispatcher Service.
Apr 11 12:15:28 dell5000 NetworkManager[5096]: <info> [1618157728.6166] device (enp7s0): state change: ip-check -> secondaries (reason 'none', sys-iface-state: 'managed')
Apr 11 12:15:28 dell5000 NetworkManager[5096]: <info> [1618157728.6171] device (enp7s0): state change: secondaries -> activated (reason 'none', sys-iface-state: 'managed')
Apr 11 12:15:28 dell5000 NetworkManager[5096]: <info> [1618157728.6177] manager: NetworkManager state is now CONNECTED_LOCAL
Apr 11 12:15:28 dell5000 NetworkManager[5096]: <info> [1618157728.6189] manager: NetworkManager state is now CONNECTED_SITE
Apr 11 12:15:28 dell5000 NetworkManager[5096]: <info> [1618157728.6190] policy: set 'enp7s0' (enp7s0) as default for IPv4 routing and DNS
Apr 11 12:15:28 dell5000 NetworkManager[5096]: <info> [1618157728.6195] device (enp7s0): Activation: successful, device activated.
Apr 11 12:15:28 dell5000 NetworkManager[5096]: <info> [1618157728.6203] manager: NetworkManager state is now CONNECTED_GLOBAL
Apr 11 12:15:28 dell5000 systemd[1]: Starting Network Name Resolution...
Apr 11 12:15:28 dell5000 systemd[1]: iscsi.service: Unit cannot be reloaded because it is inactive.
Apr 11 12:15:28 dell5000 chronyd[943]: Source 75.76.123.222 online
Apr 11 12:15:28 dell5000 chronyd[943]: Source 45.79.214.107 online
Apr 11 12:15:28 dell5000 chronyd[943]: Source 138.236.128.36 online
Apr 11 12:15:28 dell5000 chronyd[943]: Source 216.229.4.69 online
Apr 11 12:15:28 dell5000 systemd-resolved[5274]: Positive Trust Anchors:
Apr 11 12:15:28 dell5000 systemd-resolved[5274]: . IN DS 20326 8 2 e06d44b80b8f1d39a95c0b0d7c65d08458e880409bbc683457104237c7f8ec8d
Apr 11 12:15:28 dell5000 systemd-resolved[5274]: Negative trust anchors: 10.in-addr.arpa 16.172.in-addr.arpa 17.172.in-addr.arpa 18.172.in-addr.arpa 19.172.in-addr.arpa 20.172.in-addr.arpa 21.172.in-addr.arpa 22.172.in-addr.arpa 23.172.in-addr.arpa 24.172.in-addr.arpa 25.172.in-addr.arpa 26.172.in-addr.arpa 27.172.in-addr.arpa 28.172.in-addr.arpa 29.172.in-addr.arpa 30.172.in-addr.arpa 31.172.in-addr.arpa 168.192.in-addr.arpa d.f.ip6.arpa corp home internal intranet lan local private test
Apr 11 12:15:28 dell5000 systemd-resolved[5274]: Using system hostname 'dell5000'.
Apr 11 12:15:28 dell5000 systemd[1]: Started Network Name Resolution.
Apr 11 12:15:34 dell5000 systemd-resolved[5274]: Using degraded feature set UDP instead of UDP+EDNS0 for DNS server 1.1.1.1.
Apr 11 12:15:39 dell5000 systemd[1]: NetworkManager-dispatcher.service: Succeeded.
Apr 11 12:15:39 dell5000 systemd-resolved[5274]: Using degraded feature set TCP instead of UDP for DNS server 1.1.1.1.
Apr 11 12:15:39 dell5000 systemd-resolved[5274]: Using degraded feature set UDP instead of UDP+EDNS0 for DNS server 1.0.0.1.
Apr 11 12:15:44 dell5000 systemd-resolved[5274]: Using degraded feature set TCP instead of UDP for DNS server 1.0.0.1.
Apr 11 12:15:48 dell5000 systemd-resolved[5274]: Using degraded feature set UDP instead of TCP for DNS server 1.1.1.1.
Apr 11 12:15:49 dell5000 systemd-resolved[5274]: Using degraded feature set UDP instead of TCP for DNS server 1.0.0.1.
Apr 11 12:15:53 dell5000 systemd-resolved[5274]: Using degraded feature set TCP instead of UDP for DNS server 1.1.1.1.
Apr 11 12:15:54 dell5000 systemd-resolved[5274]: Using degraded feature set TCP instead of UDP for DNS server 1.0.0.1.
Apr 11 12:15:58 dell5000 systemd-resolved[5274]: Using degraded feature set UDP instead of TCP for DNS server 1.0.0.1.
Apr 11 12:16:01 dell5000 systemd-resolved[5274]: Using degraded feature set TCP instead of UDP for DNS server 1.0.0.1.
Apr 11 12:16:01 dell5000 systemd-resolved[5274]: Using degraded feature set UDP instead of TCP for DNS server 1.1.1.1.
Apr 11 12:16:04 dell5000 systemd-resolved[5274]: Using degraded feature set UDP instead of TCP for DNS server 1.0.0.1.
Apr 11 12:16:06 dell5000 systemd-resolved[5274]: Using degraded feature set TCP instead of UDP for DNS server 1.1.1.1.
Apr 11 12:16:09 dell5000 systemd-resolved[5274]: Using degraded feature set UDP instead of TCP for DNS server 1.1.1.1.
Apr 11 12:16:11 dell5000 NetworkManager[5096]: <info> [1618157771.1903] device (wlp6s0): set-hw-addr: set MAC address to 7E:13:11:28:93:DC (scanning)
Apr 11 12:16:11 dell5000 systemd-resolved[5274]: Using degraded feature set TCP instead of UDP for DNS server 1.0.0.1.
Apr 11 12:16:13 dell5000 systemd-resolved[5274]: Using degraded feature set UDP instead of TCP for DNS server 1.0.0.1.
Apr 11 12:16:14 dell5000 wpa_supplicant[1093]: wlp6s0: Reject scan trigger since one is already pending
Apr 11 12:16:14 dell5000 systemd-resolved[5274]: Using degraded feature set TCP instead of UDP for DNS server 1.0.0.1.
Apr 11 12:16:14 dell5000 systemd-resolved[5274]: Using degraded feature set TCP instead of UDP for DNS server 1.1.1.1.
Apr 11 12:16:17 dell5000 systemd-resolved[5274]: Using degraded feature set UDP instead of TCP for DNS server 1.1.1.1.
Apr 11 12:16:18 dell5000 systemd-resolved[5274]: Using degraded feature set TCP instead of UDP for DNS server 1.1.1.1.
Apr 11 12:16:22 dell5000 systemd-resolved[5274]: Using degraded feature set UDP instead of TCP for DNS server 1.0.0.1.
Apr 11 12:16:25 dell5000 systemd-resolved[5274]: Using degraded feature set UDP instead of TCP for DNS server 1.1.1.1.
Apr 11 12:16:28 dell5000 systemd-resolved[5274]: Using degraded feature set TCP instead of UDP for DNS server 1.0.0.1.
Apr 11 12:16:30 dell5000 systemd-resolved[5274]: Using degraded feature set TCP instead of UDP for DNS server 1.1.1.1.
Apr 11 12:16:32 dell5000 systemd-resolved[5274]: Using degraded feature set UDP instead of TCP for DNS server 1.1.1.1.
Apr 11 12:16:37 dell5000 systemd-resolved[5274]: Using degraded feature set UDP instead of TCP for DNS server 1.0.0.1.
Apr 11 12:16:37 dell5000 systemd-resolved[5274]: Using degraded feature set TCP instead of UDP for DNS server 1.1.1.1.
Apr 11 12:16:38 dell5000 systemd-resolved[5274]: Failed to emit notification about changed property CurrentDNSServer: Transport endpoint is not connected
Apr 11 12:16:38 dell5000 systemd[1]: Stopping Network Name Resolution...
Apr 11 12:16:38 dell5000 systemd[1]: systemd-resolved.service: Succeeded.
Apr 11 12:16:38 dell5000 systemd[1]: Stopped Network Name Resolution.
Apr 11 12:17:11 dell5000 wpa_supplicant[1093]: wlp6s0: Reject scan trigger since one is already pending
Apr 11 12:20:33 dell5000 systemd[1]: Starting system activity accounting tool...
Apr 11 12:20:34 dell5000 systemd[1]: sysstat-collect.service: Succeeded.
Apr 11 12:20:34 dell5000 systemd[1]: Finished system activity accounting tool.
Apr 11 12:22:59 dell5000 NetworkManager[5096]: <info> [1618158179.3531] device (wlp6s0): set-hw-addr: set MAC address to A2:EE:B7:80:52:60 (scanning)
Apr 11 12:29:46 dell5000 NetworkManager[5096]: <info> [1618158586.3281] device (wlp6s0): set-hw-addr: set MAC address to 6A:75:89:7F:52:B9 (scanning)
Apr 11 12:30:08 dell5000 kernel: r8169 0000:07:00.0 enp7s0: Link is Down
Apr 11 12:30:12 dell5000 kernel: r8169 0000:07:00.0 enp7s0: Link is Up - 100Mbps/Full - flow control rx/tx
Apr 11 12:30:12 dell5000 NetworkManager[5096]: <info> [1618158612.3330] device (enp7s0): carrier: link connected
Apr 11 12:30:12 dell5000 NetworkManager[5096]: <info> [1618158612.3336] device (enp7s0): DHCPv4 lease renewal requested
Apr 11 12:30:12 dell5000 NetworkManager[5096]: <info> [1618158612.3417] dhcp4 (enp7s0): canceled DHCP transaction
Apr 11 12:30:12 dell5000 NetworkManager[5096]: <info> [1618158612.3418] dhcp4 (enp7s0): state changed bound -> done
Apr 11 12:30:12 dell5000 NetworkManager[5096]: <info> [1618158612.3433] dhcp4 (enp7s0): activation: beginning transaction (timeout in 45 seconds)
Apr 11 12:30:33 dell5000 systemd[1]: Starting system activity accounting tool...
Apr 11 12:30:33 dell5000 systemd[1]: sysstat-collect.service: Succeeded.
Apr 11 12:30:33 dell5000 systemd[1]: Finished system activity accounting tool.
Apr 11 12:30:57 dell5000 NetworkManager[5096]: <warn> [1618158657.2866] dhcp4 (enp7s0): request timed out
Apr 11 12:30:57 dell5000 NetworkManager[5096]: <info> [1618158657.2867] dhcp4 (enp7s0): state changed unknown -> timeout
Apr 11 12:31:47 dell5000 kernel: r8169 0000:07:00.0 enp7s0: Link is Down
Apr 11 12:31:53 dell5000 NetworkManager[5096]: <info> [1618158713.3747] device (enp7s0): state change: activated -> unavailable (reason 'carrier-changed', sys-iface-state: 'managed')
Apr 11 12:31:53 dell5000 NetworkManager[5096]: <info> [1618158713.3796] dhcp4 (enp7s0): canceled DHCP transaction
Apr 11 12:31:53 dell5000 NetworkManager[5096]: <info> [1618158713.3797] dhcp4 (enp7s0): state changed timeout -> done
Apr 11 12:31:53 dell5000 avahi-daemon[907]: Withdrawing address record for 192.168.1.10 on enp7s0.
Apr 11 12:31:53 dell5000 avahi-daemon[907]: Withdrawing address record for 192.168.1.132 on enp7s0.
Apr 11 12:31:53 dell5000 avahi-daemon[907]: Leaving mDNS multicast group on interface enp7s0.IPv4 with address 192.168.1.132.
Apr 11 12:31:53 dell5000 avahi-daemon[907]: Interface enp7s0.IPv4 no longer relevant for mDNS.
Apr 11 12:31:53 dell5000 avahi-daemon[907]: Withdrawing address record for fe80::33ae:74a6:97a1:aeec on enp7s0.
Apr 11 12:31:53 dell5000 avahi-daemon[907]: Leaving mDNS multicast group on interface enp7s0.IPv6 with address fe80::33ae:74a6:97a1:aeec.
Apr 11 12:31:53 dell5000 avahi-daemon[907]: Interface enp7s0.IPv6 no longer relevant for mDNS.
Apr 11 12:31:53 dell5000 NetworkManager[5096]: <info> [1618158713.4074] manager: NetworkManager state is now DISCONNECTED
Apr 11 12:31:53 dell5000 systemd[1]: Starting Network Name Resolution...
Apr 11 12:31:53 dell5000 systemd[1]: Starting Network Manager Script Dispatcher Service...
Apr 11 12:31:53 dell5000 systemd[1]: Started Network Manager Script Dispatcher Service.
Apr 11 12:31:53 dell5000 chronyd[943]: Source 75.76.123.222 offline
Apr 11 12:31:53 dell5000 chronyd[943]: Source 45.79.214.107 offline
Apr 11 12:31:53 dell5000 chronyd[943]: Source 138.236.128.36 offline
Apr 11 12:31:53 dell5000 chronyd[943]: Source 216.229.4.69 offline
Apr 11 12:31:53 dell5000 systemd-resolved[5478]: Positive Trust Anchors:
Apr 11 12:31:53 dell5000 systemd-resolved[5478]: . IN DS 20326 8 2 e06d44b80b8f1d39a95c0b0d7c65d08458e880409bbc683457104237c7f8ec8d
Apr 11 12:31:53 dell5000 systemd-resolved[5478]: Negative trust anchors: 10.in-addr.arpa 16.172.in-addr.arpa 17.172.in-addr.arpa 18.172.in-addr.arpa 19.172.in-addr.arpa 20.172.in-addr.arpa 21.172.in-addr.arpa 22.172.in-addr.arpa 23.172.in-addr.arpa 24.172.in-addr.arpa 25.172.in-addr.arpa 26.172.in-addr.arpa 27.172.in-addr.arpa 28.172.in-addr.arpa 29.172.in-addr.arpa 30.172.in-addr.arpa 31.172.in-addr.arpa 168.192.in-addr.arpa d.f.ip6.arpa corp home internal intranet lan local private test
Apr 11 12:31:53 dell5000 systemd-resolved[5478]: Using system hostname 'dell5000'.
Apr 11 12:31:53 dell5000 systemd[1]: Started Network Name Resolution.
Apr 11 12:32:04 dell5000 systemd[1]: NetworkManager-dispatcher.service: Succeeded.
some 2-3 weeks ago Fedora 33 ( weeklish updated) started to lose connection. Mostly during the night - thus i didn't pay much attention initially. Today (Sun) the network was down from the morning - i was forced to actually pay attention.
All other devices - phones, Ms laptop have been operational all this time.
After some DuckDucking, I narrowed the issue down to "systemd-resolved" conflicting(?) with NetworkManager.
To have a network working, I have to stop the service. BUT I wonder what is the root cause of the issue. And why it started to manifest over the past few weeks, whereas networking was fine for many months prior...
Here is the relevant information I can think of :
Code:[root@dell5000 ~]# cat /etc/NetworkManager/NetworkManager.conf | grep -v '#'
[main]
[logging]
Code:[root@dell5000 ~]# cat /etc/systemd/resolved.conf
# This file is part of systemd.
#
# systemd is free software; you can redistribute it and/or modify it
# under the terms of the GNU Lesser General Public License as published by
# the Free Software Foundation; either version 2.1 of the License, or
# (at your option) any later version.
#
# Entries in this file show the compile time defaults.
# You can change settings by editing this file.
# Defaults can be restored by simply deleting this file.
#
# See resolved.conf(5) for details
[Resolve]
# Some examples of DNS servers which may be used for DNS= and FallbackDNS=:
# Cloudflare: 1.1.1.1 1.0.0.1 2606:4700:4700::1111 2606:4700:4700::1001
# Google: 8.8.8.8 8.8.4.4 2001:4860:4860::8888 2001:4860:4860::8844
# Quad9: 9.9.9.9 2620:fe::fe
DNS=1.1.1.1 1.0.0.1
#FallbackDNS=
#Domains=
DNSSEC=no
#DNSOverTLS=no
#MulticastDNS=no
#LLMNR=resolve
#Cache=yes
#DNSStubListener=yes
#ReadEtcHosts=yes
#ResolveUnicastSingleLabel=no
Code:[root@dell5000 ~]# systemctl status systemd-resolved
systemd-resolved.service - Network Name Resolution
Loaded: loaded (/usr/lib/systemd/system/systemd-resolved.service; enabled; vendor preset: enabled)
Active: active (running) since Sun 2021-04-11 12:15:28 EDT; 1min 2s ago
Docs: man:systemd-resolved.service(8)
https://www.freedesktop.org/wiki/Software/systemd/resolved
https://www.freedesktop.org/wiki/Software/systemd/writing-network-configuration-managers
https://www.freedesktop.org/wiki/Software/systemd/writing-resolver-clients
Main PID: 5274 (systemd-resolve)
Status: "Processing requests..."
Tasks: 1 (limit: 9394)
Memory: 7.3M
CGroup: /system.slice/systemd-resolved.service
5274 /usr/lib/systemd/systemd-resolved
Apr 11 12:16:11 dell5000 systemd-resolved[5274]: Using degraded feature set TCP instead of UDP for DNS server 1.0.0.1.
Apr 11 12:16:13 dell5000 systemd-resolved[5274]: Using degraded feature set UDP instead of TCP for DNS server 1.0.0.1.
Apr 11 12:16:14 dell5000 systemd-resolved[5274]: Using degraded feature set TCP instead of UDP for DNS server 1.0.0.1.
Apr 11 12:16:14 dell5000 systemd-resolved[5274]: Using degraded feature set TCP instead of UDP for DNS server 1.1.1.1.
Apr 11 12:16:17 dell5000 systemd-resolved[5274]: Using degraded feature set UDP instead of TCP for DNS server 1.1.1.1.
Apr 11 12:16:18 dell5000 systemd-resolved[5274]: Using degraded feature set TCP instead of UDP for DNS server 1.1.1.1.
Apr 11 12:16:22 dell5000 systemd-resolved[5274]: Using degraded feature set UDP instead of TCP for DNS server 1.0.0.1.
Apr 11 12:16:25 dell5000 systemd-resolved[5274]: Using degraded feature set UDP instead of TCP for DNS server 1.1.1.1.
Apr 11 12:16:28 dell5000 systemd-resolved[5274]: Using degraded feature set TCP instead of UDP for DNS server 1.0.0.1.The moment I stop the service I regain the connection.
Below is the log of what was happening before and after the service was brought down.
Code:Apr 11 12:15:20 dell5000 kernel: r8169 0000:07:00.0 enp7s0: Link is Down
Apr 11 12:15:20 dell5000 NetworkManager[5096]: <info> [1618157720.9225] device (enp7s0): state change: prepare -> config (reason 'none', sys-iface-state: 'managed')
Apr 11 12:15:20 dell5000 NetworkManager[5096]: <info> [1618157720.9389] device (enp7s0): state change: config -> ip-config (reason 'none', sys-iface-state: 'managed')
Apr 11 12:15:20 dell5000 NetworkManager[5096]: <info> [1618157720.9402] dhcp4 (enp7s0): activation: beginning transaction (timeout in 45 seconds)
Apr 11 12:15:20 dell5000 avahi-daemon[907]: Joining mDNS multicast group on interface enp7s0.IPv4 with address 192.168.1.10.
Apr 11 12:15:20 dell5000 avahi-daemon[907]: New relevant interface enp7s0.IPv4 for mDNS.
Apr 11 12:15:20 dell5000 avahi-daemon[907]: Registering new address record for 192.168.1.10 on enp7s0.IPv4.
Apr 11 12:15:20 dell5000 avahi-daemon[907]: Joining mDNS multicast group on interface enp7s0.IPv6 with address fe80::33ae:74a6:97a1:aeec.
Apr 11 12:15:20 dell5000 avahi-daemon[907]: New relevant interface enp7s0.IPv6 for mDNS.
Apr 11 12:15:20 dell5000 avahi-daemon[907]: Registering new address record for fe80::33ae:74a6:97a1:aeec on enp7s0.*.
Apr 11 12:15:22 dell5000 kernel: r8169 0000:07:00.0 enp7s0: Link is Up - 100Mbps/Full - flow control rx/tx
Apr 11 12:15:22 dell5000 NetworkManager[5096]: <info> [1618157722.5788] device (enp7s0): carrier: link connected
Apr 11 12:15:28 dell5000 NetworkManager[5096]: <info> [1618157728.5783] dhcp4 (enp7s0): option dhcp_lease_time => '86400'
Apr 11 12:15:28 dell5000 NetworkManager[5096]: <info> [1618157728.5784] dhcp4 (enp7s0): option domain_name_servers => '192.168.1.1'
Apr 11 12:15:28 dell5000 NetworkManager[5096]: <info> [1618157728.5784] dhcp4 (enp7s0): option expiry => '1618244126'
Apr 11 12:15:28 dell5000 NetworkManager[5096]: <info> [1618157728.5785] dhcp4 (enp7s0): option host_name => 'dell5000'
Apr 11 12:15:28 dell5000 NetworkManager[5096]: <info> [1618157728.5785] dhcp4 (enp7s0): option ip_address => '192.168.1.132'
Apr 11 12:15:28 dell5000 NetworkManager[5096]: <info> [1618157728.5785] dhcp4 (enp7s0): option next_server => '192.168.1.1'
Apr 11 12:15:28 dell5000 NetworkManager[5096]: <info> [1618157728.5786] dhcp4 (enp7s0): option requested_broadcast_address => '1'
Apr 11 12:15:28 dell5000 NetworkManager[5096]: <info> [1618157728.5786] dhcp4 (enp7s0): option requested_domain_name => '1'
Apr 11 12:15:28 dell5000 NetworkManager[5096]: <info> [1618157728.5786] dhcp4 (enp7s0): option requested_domain_name_servers => '1'
Apr 11 12:15:28 dell5000 NetworkManager[5096]: <info> [1618157728.5786] dhcp4 (enp7s0): option requested_domain_search => '1'
Apr 11 12:15:28 dell5000 NetworkManager[5096]: <info> [1618157728.5786] dhcp4 (enp7s0): option requested_host_name => '1'
Apr 11 12:15:28 dell5000 NetworkManager[5096]: <info> [1618157728.5787] dhcp4 (enp7s0): option requested_interface_mtu => '1'
Apr 11 12:15:28 dell5000 NetworkManager[5096]: <info> [1618157728.5787] dhcp4 (enp7s0): option requested_ms_classless_static_routes => '1'
Apr 11 12:15:28 dell5000 NetworkManager[5096]: <info> [1618157728.5787] dhcp4 (enp7s0): option requested_nis_domain => '1'
Apr 11 12:15:28 dell5000 NetworkManager[5096]: <info> [1618157728.5787] dhcp4 (enp7s0): option requested_nis_servers => '1'
Apr 11 12:15:28 dell5000 NetworkManager[5096]: <info> [1618157728.5787] dhcp4 (enp7s0): option requested_ntp_servers => '1'
Apr 11 12:15:28 dell5000 NetworkManager[5096]: <info> [1618157728.5788] dhcp4 (enp7s0): option requested_rfc3442_classless_static_routes => '1'
Apr 11 12:15:28 dell5000 NetworkManager[5096]: <info> [1618157728.5788] dhcp4 (enp7s0): option requested_root_path => '1'
Apr 11 12:15:28 dell5000 NetworkManager[5096]: <info> [1618157728.5788] dhcp4 (enp7s0): option requested_routers => '1'
Apr 11 12:15:28 dell5000 NetworkManager[5096]: <info> [1618157728.5788] dhcp4 (enp7s0): option requested_static_routes => '1'
Apr 11 12:15:28 dell5000 NetworkManager[5096]: <info> [1618157728.5788] dhcp4 (enp7s0): option requested_subnet_mask => '1'
Apr 11 12:15:28 dell5000 NetworkManager[5096]: <info> [1618157728.5789] dhcp4 (enp7s0): option requested_time_offset => '1'
Apr 11 12:15:28 dell5000 avahi-daemon[907]: Withdrawing address record for 192.168.1.10 on enp7s0.
Apr 11 12:15:28 dell5000 NetworkManager[5096]: <info> [1618157728.5789] dhcp4 (enp7s0): option requested_wpad => '1'
Apr 11 12:15:28 dell5000 avahi-daemon[907]: Leaving mDNS multicast group on interface enp7s0.IPv4 with address 192.168.1.10.
Apr 11 12:15:28 dell5000 NetworkManager[5096]: <info> [1618157728.5789] dhcp4 (enp7s0): option routers => '192.168.1.1'
Apr 11 12:15:28 dell5000 avahi-daemon[907]: Interface enp7s0.IPv4 no longer relevant for mDNS.
Apr 11 12:15:28 dell5000 NetworkManager[5096]: <info> [1618157728.5789] dhcp4 (enp7s0): option subnet_mask => '255.255.255.0'
Apr 11 12:15:28 dell5000 avahi-daemon[907]: Joining mDNS multicast group on interface enp7s0.IPv4 with address 192.168.1.132.
Apr 11 12:15:28 dell5000 NetworkManager[5096]: <info> [1618157728.5790] dhcp4 (enp7s0): state changed unknown -> bound
Apr 11 12:15:28 dell5000 avahi-daemon[907]: New relevant interface enp7s0.IPv4 for mDNS.
Apr 11 12:15:28 dell5000 avahi-daemon[907]: Registering new address record for 192.168.1.132 on enp7s0.IPv4.
Apr 11 12:15:28 dell5000 avahi-daemon[907]: Registering new address record for 192.168.1.10 on enp7s0.IPv4.
Apr 11 12:15:28 dell5000 NetworkManager[5096]: <info> [1618157728.5890] device (enp7s0): state change: ip-config -> ip-check (reason 'none', sys-iface-state: 'managed')
Apr 11 12:15:28 dell5000 systemd[1]: Starting Network Manager Script Dispatcher Service...
Apr 11 12:15:28 dell5000 systemd[1]: Started Network Manager Script Dispatcher Service.
Apr 11 12:15:28 dell5000 NetworkManager[5096]: <info> [1618157728.6166] device (enp7s0): state change: ip-check -> secondaries (reason 'none', sys-iface-state: 'managed')
Apr 11 12:15:28 dell5000 NetworkManager[5096]: <info> [1618157728.6171] device (enp7s0): state change: secondaries -> activated (reason 'none', sys-iface-state: 'managed')
Apr 11 12:15:28 dell5000 NetworkManager[5096]: <info> [1618157728.6177] manager: NetworkManager state is now CONNECTED_LOCAL
Apr 11 12:15:28 dell5000 NetworkManager[5096]: <info> [1618157728.6189] manager: NetworkManager state is now CONNECTED_SITE
Apr 11 12:15:28 dell5000 NetworkManager[5096]: <info> [1618157728.6190] policy: set 'enp7s0' (enp7s0) as default for IPv4 routing and DNS
Apr 11 12:15:28 dell5000 NetworkManager[5096]: <info> [1618157728.6195] device (enp7s0): Activation: successful, device activated.
Apr 11 12:15:28 dell5000 NetworkManager[5096]: <info> [1618157728.6203] manager: NetworkManager state is now CONNECTED_GLOBAL
Apr 11 12:15:28 dell5000 systemd[1]: Starting Network Name Resolution...
Apr 11 12:15:28 dell5000 systemd[1]: iscsi.service: Unit cannot be reloaded because it is inactive.
Apr 11 12:15:28 dell5000 chronyd[943]: Source 75.76.123.222 online
Apr 11 12:15:28 dell5000 chronyd[943]: Source 45.79.214.107 online
Apr 11 12:15:28 dell5000 chronyd[943]: Source 138.236.128.36 online
Apr 11 12:15:28 dell5000 chronyd[943]: Source 216.229.4.69 online
Apr 11 12:15:28 dell5000 systemd-resolved[5274]: Positive Trust Anchors:
Apr 11 12:15:28 dell5000 systemd-resolved[5274]: . IN DS 20326 8 2 e06d44b80b8f1d39a95c0b0d7c65d08458e880409bbc683457104237c7f8ec8d
Apr 11 12:15:28 dell5000 systemd-resolved[5274]: Negative trust anchors: 10.in-addr.arpa 16.172.in-addr.arpa 17.172.in-addr.arpa 18.172.in-addr.arpa 19.172.in-addr.arpa 20.172.in-addr.arpa 21.172.in-addr.arpa 22.172.in-addr.arpa 23.172.in-addr.arpa 24.172.in-addr.arpa 25.172.in-addr.arpa 26.172.in-addr.arpa 27.172.in-addr.arpa 28.172.in-addr.arpa 29.172.in-addr.arpa 30.172.in-addr.arpa 31.172.in-addr.arpa 168.192.in-addr.arpa d.f.ip6.arpa corp home internal intranet lan local private test
Apr 11 12:15:28 dell5000 systemd-resolved[5274]: Using system hostname 'dell5000'.
Apr 11 12:15:28 dell5000 systemd[1]: Started Network Name Resolution.
Apr 11 12:15:34 dell5000 systemd-resolved[5274]: Using degraded feature set UDP instead of UDP+EDNS0 for DNS server 1.1.1.1.
Apr 11 12:15:39 dell5000 systemd[1]: NetworkManager-dispatcher.service: Succeeded.
Apr 11 12:15:39 dell5000 systemd-resolved[5274]: Using degraded feature set TCP instead of UDP for DNS server 1.1.1.1.
Apr 11 12:15:39 dell5000 systemd-resolved[5274]: Using degraded feature set UDP instead of UDP+EDNS0 for DNS server 1.0.0.1.
Apr 11 12:15:44 dell5000 systemd-resolved[5274]: Using degraded feature set TCP instead of UDP for DNS server 1.0.0.1.
Apr 11 12:15:48 dell5000 systemd-resolved[5274]: Using degraded feature set UDP instead of TCP for DNS server 1.1.1.1.
Apr 11 12:15:49 dell5000 systemd-resolved[5274]: Using degraded feature set UDP instead of TCP for DNS server 1.0.0.1.
Apr 11 12:15:53 dell5000 systemd-resolved[5274]: Using degraded feature set TCP instead of UDP for DNS server 1.1.1.1.
Apr 11 12:15:54 dell5000 systemd-resolved[5274]: Using degraded feature set TCP instead of UDP for DNS server 1.0.0.1.
Apr 11 12:15:58 dell5000 systemd-resolved[5274]: Using degraded feature set UDP instead of TCP for DNS server 1.0.0.1.
Apr 11 12:16:01 dell5000 systemd-resolved[5274]: Using degraded feature set TCP instead of UDP for DNS server 1.0.0.1.
Apr 11 12:16:01 dell5000 systemd-resolved[5274]: Using degraded feature set UDP instead of TCP for DNS server 1.1.1.1.
Apr 11 12:16:04 dell5000 systemd-resolved[5274]: Using degraded feature set UDP instead of TCP for DNS server 1.0.0.1.
Apr 11 12:16:06 dell5000 systemd-resolved[5274]: Using degraded feature set TCP instead of UDP for DNS server 1.1.1.1.
Apr 11 12:16:09 dell5000 systemd-resolved[5274]: Using degraded feature set UDP instead of TCP for DNS server 1.1.1.1.
Apr 11 12:16:11 dell5000 NetworkManager[5096]: <info> [1618157771.1903] device (wlp6s0): set-hw-addr: set MAC address to 7E:13:11:28:93:DC (scanning)
Apr 11 12:16:11 dell5000 systemd-resolved[5274]: Using degraded feature set TCP instead of UDP for DNS server 1.0.0.1.
Apr 11 12:16:13 dell5000 systemd-resolved[5274]: Using degraded feature set UDP instead of TCP for DNS server 1.0.0.1.
Apr 11 12:16:14 dell5000 wpa_supplicant[1093]: wlp6s0: Reject scan trigger since one is already pending
Apr 11 12:16:14 dell5000 systemd-resolved[5274]: Using degraded feature set TCP instead of UDP for DNS server 1.0.0.1.
Apr 11 12:16:14 dell5000 systemd-resolved[5274]: Using degraded feature set TCP instead of UDP for DNS server 1.1.1.1.
Apr 11 12:16:17 dell5000 systemd-resolved[5274]: Using degraded feature set UDP instead of TCP for DNS server 1.1.1.1.
Apr 11 12:16:18 dell5000 systemd-resolved[5274]: Using degraded feature set TCP instead of UDP for DNS server 1.1.1.1.
Apr 11 12:16:22 dell5000 systemd-resolved[5274]: Using degraded feature set UDP instead of TCP for DNS server 1.0.0.1.
Apr 11 12:16:25 dell5000 systemd-resolved[5274]: Using degraded feature set UDP instead of TCP for DNS server 1.1.1.1.
Apr 11 12:16:28 dell5000 systemd-resolved[5274]: Using degraded feature set TCP instead of UDP for DNS server 1.0.0.1.
Apr 11 12:16:30 dell5000 systemd-resolved[5274]: Using degraded feature set TCP instead of UDP for DNS server 1.1.1.1.
Apr 11 12:16:32 dell5000 systemd-resolved[5274]: Using degraded feature set UDP instead of TCP for DNS server 1.1.1.1.
Apr 11 12:16:37 dell5000 systemd-resolved[5274]: Using degraded feature set UDP instead of TCP for DNS server 1.0.0.1.
Apr 11 12:16:37 dell5000 systemd-resolved[5274]: Using degraded feature set TCP instead of UDP for DNS server 1.1.1.1.
Apr 11 12:16:38 dell5000 systemd-resolved[5274]: Failed to emit notification about changed property CurrentDNSServer: Transport endpoint is not connected
Apr 11 12:16:38 dell5000 systemd[1]: Stopping Network Name Resolution...
Apr 11 12:16:38 dell5000 systemd[1]: systemd-resolved.service: Succeeded.
Apr 11 12:16:38 dell5000 systemd[1]: Stopped Network Name Resolution.
Apr 11 12:17:11 dell5000 wpa_supplicant[1093]: wlp6s0: Reject scan trigger since one is already pending
Apr 11 12:20:33 dell5000 systemd[1]: Starting system activity accounting tool...
Apr 11 12:20:34 dell5000 systemd[1]: sysstat-collect.service: Succeeded.
Apr 11 12:20:34 dell5000 systemd[1]: Finished system activity accounting tool.
Apr 11 12:22:59 dell5000 NetworkManager[5096]: <info> [1618158179.3531] device (wlp6s0): set-hw-addr: set MAC address to A2:EE:B7:80:52:60 (scanning)
Apr 11 12:29:46 dell5000 NetworkManager[5096]: <info> [1618158586.3281] device (wlp6s0): set-hw-addr: set MAC address to 6A:75:89:7F:52:B9 (scanning)
Apr 11 12:30:08 dell5000 kernel: r8169 0000:07:00.0 enp7s0: Link is Down
Apr 11 12:30:12 dell5000 kernel: r8169 0000:07:00.0 enp7s0: Link is Up - 100Mbps/Full - flow control rx/tx
Apr 11 12:30:12 dell5000 NetworkManager[5096]: <info> [1618158612.3330] device (enp7s0): carrier: link connected
Apr 11 12:30:12 dell5000 NetworkManager[5096]: <info> [1618158612.3336] device (enp7s0): DHCPv4 lease renewal requested
Apr 11 12:30:12 dell5000 NetworkManager[5096]: <info> [1618158612.3417] dhcp4 (enp7s0): canceled DHCP transaction
Apr 11 12:30:12 dell5000 NetworkManager[5096]: <info> [1618158612.3418] dhcp4 (enp7s0): state changed bound -> done
Apr 11 12:30:12 dell5000 NetworkManager[5096]: <info> [1618158612.3433] dhcp4 (enp7s0): activation: beginning transaction (timeout in 45 seconds)
Apr 11 12:30:33 dell5000 systemd[1]: Starting system activity accounting tool...
Apr 11 12:30:33 dell5000 systemd[1]: sysstat-collect.service: Succeeded.
Apr 11 12:30:33 dell5000 systemd[1]: Finished system activity accounting tool.
Apr 11 12:30:57 dell5000 NetworkManager[5096]: <warn> [1618158657.2866] dhcp4 (enp7s0): request timed out
Apr 11 12:30:57 dell5000 NetworkManager[5096]: <info> [1618158657.2867] dhcp4 (enp7s0): state changed unknown -> timeout
Apr 11 12:31:47 dell5000 kernel: r8169 0000:07:00.0 enp7s0: Link is Down
Apr 11 12:31:53 dell5000 NetworkManager[5096]: <info> [1618158713.3747] device (enp7s0): state change: activated -> unavailable (reason 'carrier-changed', sys-iface-state: 'managed')
Apr 11 12:31:53 dell5000 NetworkManager[5096]: <info> [1618158713.3796] dhcp4 (enp7s0): canceled DHCP transaction
Apr 11 12:31:53 dell5000 NetworkManager[5096]: <info> [1618158713.3797] dhcp4 (enp7s0): state changed timeout -> done
Apr 11 12:31:53 dell5000 avahi-daemon[907]: Withdrawing address record for 192.168.1.10 on enp7s0.
Apr 11 12:31:53 dell5000 avahi-daemon[907]: Withdrawing address record for 192.168.1.132 on enp7s0.
Apr 11 12:31:53 dell5000 avahi-daemon[907]: Leaving mDNS multicast group on interface enp7s0.IPv4 with address 192.168.1.132.
Apr 11 12:31:53 dell5000 avahi-daemon[907]: Interface enp7s0.IPv4 no longer relevant for mDNS.
Apr 11 12:31:53 dell5000 avahi-daemon[907]: Withdrawing address record for fe80::33ae:74a6:97a1:aeec on enp7s0.
Apr 11 12:31:53 dell5000 avahi-daemon[907]: Leaving mDNS multicast group on interface enp7s0.IPv6 with address fe80::33ae:74a6:97a1:aeec.
Apr 11 12:31:53 dell5000 avahi-daemon[907]: Interface enp7s0.IPv6 no longer relevant for mDNS.
Apr 11 12:31:53 dell5000 NetworkManager[5096]: <info> [1618158713.4074] manager: NetworkManager state is now DISCONNECTED
Apr 11 12:31:53 dell5000 systemd[1]: Starting Network Name Resolution...
Apr 11 12:31:53 dell5000 systemd[1]: Starting Network Manager Script Dispatcher Service...
Apr 11 12:31:53 dell5000 systemd[1]: Started Network Manager Script Dispatcher Service.
Apr 11 12:31:53 dell5000 chronyd[943]: Source 75.76.123.222 offline
Apr 11 12:31:53 dell5000 chronyd[943]: Source 45.79.214.107 offline
Apr 11 12:31:53 dell5000 chronyd[943]: Source 138.236.128.36 offline
Apr 11 12:31:53 dell5000 chronyd[943]: Source 216.229.4.69 offline
Apr 11 12:31:53 dell5000 systemd-resolved[5478]: Positive Trust Anchors:
Apr 11 12:31:53 dell5000 systemd-resolved[5478]: . IN DS 20326 8 2 e06d44b80b8f1d39a95c0b0d7c65d08458e880409bbc683457104237c7f8ec8d
Apr 11 12:31:53 dell5000 systemd-resolved[5478]: Negative trust anchors: 10.in-addr.arpa 16.172.in-addr.arpa 17.172.in-addr.arpa 18.172.in-addr.arpa 19.172.in-addr.arpa 20.172.in-addr.arpa 21.172.in-addr.arpa 22.172.in-addr.arpa 23.172.in-addr.arpa 24.172.in-addr.arpa 25.172.in-addr.arpa 26.172.in-addr.arpa 27.172.in-addr.arpa 28.172.in-addr.arpa 29.172.in-addr.arpa 30.172.in-addr.arpa 31.172.in-addr.arpa 168.192.in-addr.arpa d.f.ip6.arpa corp home internal intranet lan local private test
Apr 11 12:31:53 dell5000 systemd-resolved[5478]: Using system hostname 'dell5000'.
Apr 11 12:31:53 dell5000 systemd[1]: Started Network Name Resolution.
Apr 11 12:32:04 dell5000 systemd[1]: NetworkManager-dispatcher.service: Succeeded.