[gdm-list] GDM and reverse DNS

[Francis Giraldeau <francis giraldeau revolutionlinux com>]

Hi,

I did observed a misbehaviour of GDM in environment using dynamic dns
update. When the reverse lookup doesn't correspond to the forward
lookup, then GDM reply XDMCP willing not to the original request address.

Workstation that request XDMCP is 1.2.3.4

Reverse lookup :
1.2.3.4 -> name

Direct lookup
name -> 4.5.6.7

XDMCP willing is send to 4.5.6.7

To correct the problem, the DNS entries have to be fixed. If the DNS
entry is deleted, then XDMCP is working appropriately. Correct DNS
salvage may reduce the problem occurrence, but isn't preventing it
completely.

I didn't found option to configure GDM to avoid doing the reverse
lookup, and just use the IP it received. Does this kind of options is a
good idea?

Have a nice day,

-- 
Francis Giraldeau, Ing jr.
Analyste Infrastructure
Directeur Qualité
Téléphone : (819) 780-8955 poste 1111
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