Red Hat Bugzilla – Bug 60649
Replies to XDMCP query sent to wrong address, cause connection to fail
Last modified: 2008-05-01 11:38:01 EDT
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User-Agent: Mozilla/4.0 (compatible; MSIE 5.5; Windows NT 5.0; T312461)
Description of problem:
Replies to queries sent to wrong address
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1.Enable XDMCP on a RedHat machine (Standard steps: editing xdm-config,
Xaccess, gdm.conf, kdmrc, etc) at address 192.168.1.10.
2.Install Cygwin/XFree86 under Windows 2000 at 192.168.1.1.
3.These two machines are on the same subnet 192.168.1.x, sharing an Internet
connection through a Windows 2000 Server at 192.168.1.100.
4.Launch XWin under Cygwin with the command "XWin -query 192.168.1.10 -from
5. Use netstat -an to examine socket info on the RedHat 7.2 machine
immediately. Notice that the RedHat 7.2 machine is sending UDP data to
192.168.1.100, not 192.168.1.1 !!!
Actual Results: The XDMCP query fails. Although one can add route specifically
on thr RedHat 7.2 machine to the machine that does the query and fix this
problem, this just is not right.
Expected Results: The RedHat 7.2 machine is supposed to send UDP data directly
to the address of the machine that does the XDMCP query, not the gateway
aasign to XFree86
You might want to report this bug to XFree86.org also, so more eyes
are on it.
Just tested, and it works for me. You must have some local configuration
issue. Nobody else is reporting this problem.