Multi IP assign for single MAC-Urgent

Simon Hobson dhcp1 at
Tue Jan 4 19:23:56 UTC 2011

Brad Bendily wrote:

>So, I used this syntax:
>  if substring (client-id,1,4) = "RAC " {
>        ignore booting;
>  }
>but, it doesn't seem to have made any effect on the usage of addresses.
>I read through the man pages, but I just don't really get it.
>What does the "client-id,1,4" part mean, and does that need to be
>changed to make this work for me?

man dhcp-eval

>Alternatively, is there a better way to block or deny these devices?
>I have tried statically assigning them addresses, but that doesn't work.
>The MAC is very strange and I'm pretty sure we don't have any "token-ring"
>devices on the network.

Try searching the logs for those devices, it will probably give you more clues.

Simon Hobson

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