(updated) slackpkg failed: No route to host

On one of my -current boxes is receiving many errors failed no route to host
Resolving slackware.uk... 2a02:2498:1:227::240, 91.109.244.240 when running any command with slackpkg. I suspect some network related but I have another box running current with same settings (network, slackpkg has exact copies of files) and no such errors. I have tried different mirrors.
The application is working, but not getting rid of that error.
Code:failed: No route to hostupdate: it's happening when trying to connect and download from IPv6 address

This is my slackpkg.conf
Code:#
TEMP=/var/cache/packages
WORKDIR=/var/lib/slackpkg
WGETFLAGS="--passive-ftp"
DELALL=on
CHECKMD5=on
CHECKGPG=on
CHECKSIZE=off
PRIORITY=( testing patches %PKGMAIN extra pasture )
POSTINST=on
ONLY_NEW_DOTNEW=off
ONOFF=on
DOWNLOAD_ALL=on
DIALOG=on
BATCH=off
DEFAULT_ANSWER=n
USE_INCLUDES=on
SPINNING=on
DIALOG_MAXARGS=139000
And this is my slackpkgplus.conf
Code:SLACKPKGPLUS=on
VERBOSE=1
ALLOW32BIT=off
USEBL=1
WGETOPTS="--timeout=20 --tries=2"
SEARCH_CLOG_INPARENT=on
CACHEUPDATE=off
GREYLIST=on
SENSITIVE_SEARCH=on
WW_FILE_SEARCH=on
SHOWORDER=package
DETAILED_INFO=none
STRICTGPG=on
TAG_PRIORITY=off
REPOPLUS=( slackpkgplus alienbob )
MIRRORPLUS['slackpkgplus']=http://slakfinder.org/slackpkg+/
MIRRORPLUS['alienbob']=http://bear.alienbase.nl/mirrors/people/alien/sbrepos/current/x86_64/And the mirrors
Code:https://mirrors.slackware.com/slackware/slackware64-current/