how is the client identifer used in other DHCP servers.

Simon Kelley simon at
Thu Mar 23 07:39:19 UTC 2006

David W. Hankins wrote:

>>How do other DHCP servers react to option 61, type 0?
> As far as I am aware, in the exact same way.  I think all the server
> manufacturers know that doing anything different would probably result
> in incompatible and broken behaviours.
> At least I hope they do.

Dnsmasq treats client-ids as opaque blobs, with a single exception that 
acknowledges the "zero type is string" convention. If a client-id starts 
with a zero, then an attempt is made to match against any configured ids 
both with and without the zero. So a configuration option like this:


will match (and assign a fixed address to) both client-id

'f' 'r' 'e' 'd'


'/0' 'f' 'r' 'e' 'd'



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