Warning: subnet overlaps subnet

Sten Carlsen sten at s-carlsen.dk
Wed Mar 19 00:07:35 UTC 2008

I have been thinking for a while, why is there a difference between what 
is reported by OFFER and INFORM?

Would the correct action not be to make sure they report the same? I.e. 
do the same processing on both OFFER and INFORM.

Just my 0.02€

David W. Hankins wrote:
> On Tue, Mar 18, 2008 at 05:02:55PM -0500, John Hascall wrote:
>>    Well, if I'm the only one to mention it, I wouldn't
>>    get too worked up about it on just my behalf -- especially
>>    since I've already got a half-dozen other local mods in
>>    dhcpd, so I'm not at all adverse to adding another -- I'll
>>    just always answer INFORMS regardless of the setting of
>>    authoritative.
> i don't know, we get the odd message from someone who has discovered
> that some clients do a DHCPINFORM after they are already bound...they
> did DISCOVER and REQUEST and are adddressed and everything, but elect
> to DHCPINFORM anyway.  like the config they got wasn't good enough or
> something.
> in this case, we find that these odd little clients will update their
> nameservers if a different answer comes than was in the DORA exchange.
> so it might actually be useful to just ignore the little buggers
> without having to become non-authoritative.

Best regards

Sten Carlsen

No improvements come from shouting:


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