https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=36948 --- Comment #9 from David Cook <dcook@prosentient.com.au> --- According to https://docs.docker.com/config/daemon/ipv6/ Docker doesn't support IPv6 out of the box. Of course, I don't know how I'm seeing "[::]:4369" in the output of "ss" for epmd in that case, but whatever. I'm noticing the following: $ sysctl -a | grep ipv6 | grep "disable" net.ipv6.conf.all.disable_ipv6 = 1 $ nc -l ::1 8008 -v -n nc: Cannot assign requested address -- Compare that with a normal Ubuntu 22.04 VM # sysctl -a | grep ipv6 | grep "disable" net.ipv6.conf.all.disable_ipv6 = 0 # nc -l ::1 8008 -n -v Listening on ::1 8008 -- You are receiving this mail because: You are watching all bug changes.