Upstream 5.0.23 fixed this issue. There is no separate upstream bug report.
http://ftp- master.metadata.debian.org/changelogs/main/w/whois/unstable_changelog ** Changed in: whois (Ubuntu) Status: Confirmed => Fix Committed -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to whois in Ubuntu. https://bugs.launchpad.net/bugs/1132526 Title: invaild encoding with .kr and .xn--3e0b707e domains To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/whois/+bug/1132526/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs