Linux - NetworkingThis forum is for any issue related to networks or networking.
Routing, network cards, OSI, etc. Anything is fair game.
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when i try to start dhcp server it fails , and gives me the error:
No subnet declaration for eth-<mac address of the external card> (0.0.0.0).
** Ignoring requests on eth-<mac address of the external card>. If this is not what
you want, please write a subnet declaration
in your dhcpd.conf file for the network segment
to which interface eth-<mac address of the external card> is attached. **
I'm guessing here, but it looks like your system has an additional interface that has not been configured. The output of "ifconfig" should verify this. If so, you can either add the subnet declaration as pointed out in the error message or simply specify a list of interfaces for dhcpd to bind to on startup through the dhcpd command line. i.e. dhcpd eth0
Either way you would like to set wich interface the DCHP server listens to as state above. This is a security issue as the DHCP server only should serve your local network.
The setting for NIC's to bind to usually is found in the /etc/sysconfig/ directory.