patch 9.0.2082: test_channel may fail because of IPv6 config issue Commit: https://github.com/vim/vim/commit/43cb8e1c3b60f6fcd30a9a0f9b01b86d640b2165 Author: James McCoy <jamessan@jamessan.com> Date: Thu Nov 2 20:05:38 2023 +0100 patch 9.0.2082: test_channel may fail because of IPv6 config issue Problem: test_channel may fail because of IPv6 config issues Solution: Catch and skip the test, if getaddrinfo() fails with 'Address family not supported' Mark tests as skipped when ch_open encounters E901 On some of the Debian build systems, the IPv6 channel tests fail because `ch_open('[::1]:<port>', ...)` raises the error "E901: getaddrinfo() in channel_open(): Address family for hostname not supported". This appears to happen because getaddrinfo() can't perform the reverse lookup for the ::1, which is a config issue on that system. Therefore, instead of reporting a test failure, mark the test as skipped due to the bad network config closes: #13473 Signed-off-by: James McCoy <jamessan@jamessan.com> Signed-off-by: Christian Brabandt <cb@256bit.org>