dhcp1 at thehobsons.co.uk
Thu Mar 18 15:38:09 UTC 2010
kalyan Alle wrote:
>thanks for the reply simon. Can u point me to the location of the
>documentation where it is given in the ISC dhcp package.
Good question !
man dhcpd.conf has :
DYNAMIC ADDRESS ALLOCATION
If the server finds the address the client is requesting, and
that address is available to the client, the server will send
a DHCPACK. If the address is no longer available, or the
client isn't permitted to have it, the server will send a
DHCPNAK. If the server knows nothing about the address, it
will remain silent, unless the address is incorrect for the
network segment to which the client has been attached and the
server is authoritative for that network segment, in which
case the server will send a DHCPNAK even though it doesn't
know about the address.
Now it's not terribly clear from that, but not being in a range
statement would come under the category of "the server knows nothing
about the address".
"the address is no longer available" would refer to a situation where
the address is either leased to another client, or is in a range
where access conditions (allow/deny) prohibit that client from being
given the address.
To be honest, I only know about it because it's come up a few times
in the mailing list, usually as part of a discussion on migrating
clients from one server to another - for which one technique is in
fact to run two servers and keep removing addresses from the
available pools on the old server and adding them to the pools on the
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This is NOT the same thing as the printer drivers to load on the
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If anyone knows where I might get hold of one I'd be grateful -
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