Listening IP

Dean, Barry B.Dean at
Wed Jul 2 13:26:00 UTC 2008

Hi, I have four DHCP servers, ISC DHCP 4.0.0 running on Solaris 10 x86 on Sun X4200 hardware.

These machines have 4 network cards. The one I am using has id e1000g3.

On this card there are two IPs, an example:

e1000g3:	primary-name
e1000g3:1	dhcp

My config file says to listen on the 31 subnet thus:

subnet netmask {
  option subnet-mask ;
  option routers ;
  option domain-name-servers, ;

Problem is clients report that the DHCP server that gave them an IP was, the primary-name.

I would like them to think it was the IP, the dhcp name instead.

With other daemons, like DNS, RADIUS, I am used to binding the service to an IP, with DHCP it looks like you bind to an entire subnet, can this be changed? I would only like the servers to listen on the "dhcp" interface and only reply from it.


Barry Dean
Networks Team 
Computing Services Department
Browlow Hill/Crown Street

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