Listening IP
Dean, Barry
B.Dean at liverpool.ac.uk
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: 192.168.31.100 primary-name
e1000g3:1 192.168.31.10 dhcp
My config file says to listen on the 31 subnet thus:
subnet 192.168.31.0 netmask 255.255.255.0 {
option subnet-mask 255.255.255.0 ;
option routers 192.168.31.1 ;
option domain-name-servers 192.168.120.100, 192.168.120.101 ;
}
Problem is clients report that the DHCP server that gave them an IP was 192.168.31.100, the primary-name.
I would like them to think it was the 192.168.31.10 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.
Thanks.
---------------
Barry Dean
Networks Team
Computing Services Department
Browlow Hill/Crown Street
Liverpool
Email: B.Dean_at_liverpool.ac.uk
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