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11.13.2007 at 06:41AM PST, ID: 22957127
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how to make dhcpd bind only to some interfaces

Tags: dhcpd, bind, interface
I've a (CentOS) linux server with 2 interfaces (lan and wan) and running dhcpd.
When dhcpd start I see in the log file:
Nov 13 15:36:40 shoebox dhcpd: Listening on LPF/eth1/xx:xx:xx:xx:xx:xx/11.22.33.44/30
Nov 13 15:36:40 shoebox dhcpd: Sending on   LPF/eth1/xx:xx:xx:xx:xx:xx/11.22.33.44/30
Nov 13 15:36:40 shoebox dhcpd: Listening on LPF/eth0/xx:xx:xx:xx:xx:xx/10.0.0.0/24
Nov 13 15:36:40 shoebox dhcpd: Sending on   LPF/eth0/xx:xx:xx:xx:xx:xx/10.0.0.024
Nov 13 15:36:40 shoebox dhcpd: Sending on   Socket/fallback/fallback-net
Nov 13 15:36:40 shoebox dhcpd: dhcpd startup succeeded

How can I make dhcpd bind only to the eth0 interface ?

(of course I could make dhcpd reject requests on eth1 and anyway block dhcp traffic on eth1 with the firewall, but anyway I'd like to have bind not listen at all on the eth1 interface)
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Question Stats
Zone: Networking
Question Asked By: lbertacco
Solution Provided By: ravenpl
Participating Experts: 1
Solution Grade: B
Views: 55
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11.13.2007 at 07:00AM PST, ID: 20271888

Rank: Wizard

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11.13.2007 at 07:26AM PST, ID: 20272103

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11.13.2007 at 07:00AM PST, ID: 20271888

Rank: Wizard

edit /etc/sysconfig/dhcpd
make sure
DHCPDARGS=
contains Your desired interfaces and restart: service dhcpd restart
DHCPDARGS="eth0 eth1"
Accepted Solution
 
11.13.2007 at 07:26AM PST, ID: 20272103
Excellent. Obviously I had to use DHCPDRARGS="eth0".
 
 
11.13.2007 at 07:34AM PST, ID: 20272172
> Excellent.
But resolution marked as average(B)?
 
 
11.13.2007 at 08:05AM PST, ID: 20272463
excellent because thanks to it I could solve my problem. (B) is GOOD not average. Average is (C).
I didn't give (A) because the answer
- is not completely correct. The value given to DHCPDARGS in your post doesn't solve my problem
- I keep (A) for answers that really look outstanding to me.
 
 
11.13.2007 at 09:36AM PST, ID: 20273308
> - is not completely correct. The value given to DHCPDARGS in your post doesn't solve my problem
Oh really - I always trying to provide rather directions than exact answers. With my answer You surely know that You can place there more than one interface. Otherwise it would not be so obvious - right?
 
 
 
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