ssh/openssh and X authentication

[Nigel Metheringham]

I've currently got a couple of boxes which obtain their IP address via 
DHCP, and as a consequence do not have a mapping in /etc/hosts for 
their own IP/name... but helpfully (!) they have their name mapping to 
127.0.0.1

This breaks X authentication... - openssh (and also ssh) makes an 
apparently valid xauth entry, but all attempts to start clients gives 
"X11 connection rejected because of wrong authentication."  Hacking the 
DISPLAY & xauth entries to use the real IP address of the box, or even 
127.0.0.2 works fine, so it appears that something (maybe outside ssh) 
is special casing 127.0.0.1

Would it be possible to make sshd use the IP address of the local 
socket rather than the hostname to give to xauth?
Alternatively is there some good reason as to why 127.0.0.1 is not 
working?

I can do the coding on this - however I want to find out if there is a 
good reason for current behaviour before making patches that get 
rejected (!).

	Nigel.
	 
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[ Nigel Metheringham                  Nigel.Metheringham at VData.co.uk ]
[ Phone: +44 1423 850000                         Fax +44 1423 858866 ]