iputils/ping was wrong. On machines with this bug a "getent hosts chat.freenode.net" results in no output! Perhaps we have to look at getaddrinfo()!
Thanks to the french ubuntu-channel #ubuntu-fr for this hint :) ** No longer affects: iputils (Ubuntu) -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to systemd in Ubuntu. https://bugs.launchpad.net/bugs/1665394 Title: DNS resolution of irc.freenode.net or chat.freenode.net fails To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1665394/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs