IPAddress Reservation (Best Practice)

Frank Bulk - iNAME frnkblk at iname.com
Tue Aug 12 04:03:56 UTC 2008


The third-party GUI front-end that we use nicely shows the inheritance, so I
actually prefer to keep the host statements in the subnet declaration.

Frank

-----Original Message-----
From: dhcp-users-bounce at isc.org [mailto:dhcp-users-bounce at isc.org] On Behalf
Of Simon Hobson
Sent: Monday, August 11, 2008 7:57 AM
To: dhcp-users at isc.org
Subject: Re: IPAddress Reservation (Best Practice)

<snip>

They MUST NOT be within a subnet declaration. With a few exceptions
for some rather unusual requirements, you REALLY do not want them in
your subnet declarations. Host statements are global in scope (and so
are still 'valid' when the client is not in that subnet - BUT,
clients matching a host statement will inherit some options from the
subnet where the host declaration is made.

In case you haven't worked that out, you can have a client getting a
dynamic IP address in one subnet, while inheriting the (incorrect)
router address from the subnet where it's host statement is declared.
I think anyone can imagine the confusion that could cause !

<snip>




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