New system networking not working

I recently set up a machine whichis running Slackware 14.2 todual boot into Slackware 15.0. Networking doesn't work on the new version, although it works fine on the old system. Specifically what doesn't work is ping and HTTP/HTTPS. I set it up with netconfig, which generally "just works".
Here's the output of /sbin/route:
Code:Destination Gateway Genmask Flags Metric Ref Use Iface
default 192.168.0.1 0.0.0.0 UG 0 0 0 eth0
loopback 0.0.0.0 255.0.0.0 U 0 0 0 lo
localnet 0.0.0.0 255.255.255.0 U 0 0 0 eth0...and /sbin/ifconfig:
Code:eth0: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
inet 192.168.0.86 netmask 255.255.255.0 broadcast 192.168.0.255
ether 10:c3:7b:6d:f9:2e txqueuelen 1000 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
device interrupt 20 memory 0xdfd00000-dfd20000

lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10<host>
loop txqueuelen 1000 (Local Loopback)
RX packets 29 bytes 2040 (1.9 KiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 29 bytes 2040 (1.9 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0I feel like I'm overlooking something obvious, particularly since I set up a virtual machine on another system of Slackware 15.0 from the same USB stick, and networking works fine.