This was fixed for glibc 2.15 with this commit, but no bug was filed at the time: commit 2e96f1c73b06e81da59ef7fffa426dc201875f31 Author: Andreas Schwab <schwab@redhat.com> Date: Thu Aug 4 15:42:10 2011 -0400 Fix encoding name for IDN in getaddrinfo
Already fixed in master.