Home / server / Questions / 612406
In Process
William Hilsum
Asked: 2014-07-15 06:30:50 +0800 CST

Binding ISC DHCPD to a virtual (heartbeat) interface

  • 772

I had a DHCP server that acted as a relay endpoint and worked fine.

let's say this is a solo machine with eth0 with an ip of 192.168.0.10

I needed to bring this server down and join it to a cluster, so, eth0 will be different, but, the ip 192.168.0.10 is now a cluster resource.

This works great and most services are working fine, but, isc-dhcpd doesn't appear to be virtual ip aware.

Requests are coming in on the correct 192.168.0.10 eth0:1 virtual interface, but, the response is going out via the standard eth0 interface which is causing endless DHCPREQUEST messages as the DHCP message is being discarded by the firewall or switch themselves.

I have tried various IPTABLES rules to spoof without much luck, and, I was just wondering if there is a correct way to bind ISC DHCPD to a virtual interface?

(FYI, tried the standard interfaces=eth0:1 without any luck :( )

networking

0 Answers