dhcpinform or dhcprequest

David W. Hankins dhankins at isc.org
Fri Sep 4 23:36:38 UTC 2009

On Wed, Sep 02, 2009 at 03:46:34PM -0700, David W. Hankins wrote:
> the windows XP client is not known to behave as you describe, sending
> a DHCPINFORM in lieu of a DHCPREQUEST...

do you know what else does happen quite often tho?

the DHCPINFORMing client is given a different domain nameservers or
domain search, or other options, and it appears to the user that
they've lost network access if that configuration is no longer valid
for them...

DHCPINFORM and DHCPREQUEST processing is necessarily different in
several ways in order to conform strictly with RFC 2131...something
we've been meaning to reduce.

the wpad option poison at DHCPREQUEST time also solves this neatly

David W. Hankins	"If you don't do it right the first time,
Software Engineer		     you'll just have to do it again."
Internet Systems Consortium, Inc.		-- Jack T. Hankins
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: application/pgp-signature
Size: 194 bytes
Desc: not available
URL: <https://lists.isc.org/pipermail/dhcp-users/attachments/20090904/0ec29c2f/attachment.bin>

More information about the dhcp-users mailing list