Description of Problem: Openssh-3.1p1-2 does not do X11 forwarding on servers that supports both IPv4 and IPv6. Version-Release number of selected component (if applicable): openssh-3.1p1-2 How Reproducible: Always Steps to Reproduce: 1. Upgrade to openssh-3.1p1-2 2. Login by ssh 3. Try to open an xterm window Actual Results: Get this error message: Warning: This program is an suid-root program or is being run by the root user. The full text of the error or warning message cannot be safely formatted in this environment. You may get a more descriptive message by running the program as a non-root user or by removing the suid bit on the executable. xterm Xt error: Can't open display: %s Expected Results: An xterm windows should appear. Additional Information: Using lsof and strace it is clear that openssh X11 forwarding happens locally over 127.0.0.1 while openssh only listens on ::1 if IPv6 is available. A simple way to get X11 forwarding to work is to start sshd with the -4 option. Previous versions of openssh did not have this problem.
Does it still happen with current Fedora Core?
*** Bug 65543 has been marked as a duplicate of this bug. ***
No response, please reopen if still happens with a current FC/RHEL release.