exclude addresses

Simon Hobson dhcp1 at thehobsons.co.uk
Thu Jan 10 07:48:47 UTC 2008

Ron Croonenberg wrote:

>I tried assigning   and 169.254.x.y   but somehow that 
>client sees that it is a 'worthless' address ad keeps using the old 
>address it 'stole'.
>I noticed that with 'deny booting'  it uses the old address too 
>even after trying to get an address with dhcp

Don't forget that DHCP is NOT a security protocol - you CANNOT 
prevent someone using your network with DHCP alone. As you have 
observed, there is nothing to stop a client using whatever address it 
likes and ignore the DHCP server.

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