On 19 February 2015 at 15:46, Dan062 <dan062@yahoo.com.au> wrote:

I have a debian 7 box with 2 network cards eth0 and eth1.

eth1 is set to static ip: a.b.c.149 (in /etc/network/interfaces)

eth0 is dhcp

The DHCP server has no way of knowing what static IP addresses are in use in your network. So unless you take care and tell your DHCP server not to assign certain IP ranges of addresses, it will issue duplicate values, and you could end up with two computers sharing the same IP address.

You can't have DHCP and static IP addresses share the same address ranges.

(note: when I say static IP address I mean IP addresses assigned directly on the computer and not where DHCP has been told to use a fixed IP address for a given MAC address).

Apologies if this was already addressed and I missed it.

Brian May <brian@microcomaustralia.com.au>