Red Hat Bugzilla – Bug 54642
openssh-2.9p2-8.7 does not handle IPv6 correctly in some respects
Last modified: 2008-05-01 11:38:01 EDT
From Bugzilla Helper:
User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:0.9.4) Gecko/20010913
Description of problem:
openssh-2.9p2-8.7 does not allow access over IPv6 when there is a
tcp_wrapper type access control in /etc/hosts.allow based on domain.
This will work:
The following is logged in this case:
refused connect from 0.0.0.0
Both the server and client have proper AAAA records and corresponding
entries in ip6.int
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1. Upgrade to openssh-2.9p2-8.7 This adds IPv6 support also to openssh.
2. If anything but ALL access is defined in /etc/hosts.allow access fails.
Actual Results: Access is denied.
Expected Results: Access allowed.
This problem is probably because the part of openssh that reads
/etc/hosts.allow does not understand IPv6, AAAA records etc.
You need to rebuild openssh with updated tcp_wrappers (they were present only from RHL72 onwards) if you want
IPv6 connections to work.
Closing as fixed in Raw Hide.