Running "PROC_NET_UDP6=/foobar/non-exist ss -un" works just fine. The problem is not about a missing proc file.
Jukka: Could you please get a gdb backtrace? strace is mostly useless for hunting down segmentation faults. To get a useful backtrace you most likely need to rebuild with debugging symbols. Try this: apt-get install build-essential cd /tmp apt-get source iproute cd iproute-* apt-get build-dep iproute make gdb ./misc/ss set args -un run bt -- iproute: ss -u segfaults if ipv6 module is not loaded https://bugs.launchpad.net/bugs/225573 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs