On 07/16/2011 02:24 PM, Timothy Murphy wrote:
Digimer wrote:
On 07/15/2011 03:00 PM, Timothy Murphy wrote:
What exactly sets up the correspondence between interfaces and LANs, eg (in my case) eth1 <-> 192.168.2.0 ?
I don't see any file in /etc/sysconfig , say, where this is specified.
It's mapped using 'HWADDR' in the /etc/sysconfig/network-scripts/ifcfg-ethX and/or in /etc/udev/rules.d/70-persistent-net.rules.
These establish a correspondence between the interfaces and the MAC addresses of the NICs. And ifcfg-ethX sets up a correspondence between MAC addresses and IP addresses of the NICs, in my case eth1 -> 192.168.2.2 .
It would be possible to deduce from this that eth1 corresponds to the subnet 192.168.2.0 . But dhcpd does not appear to make this deduction.
If I might ask, are you running dhcpd under CentOS-6 ? Is anybody running dhcpd under CentOS-6 ? If so, I would be very interested to see your dhcpd.conf and ifcfg-ethX .
I should say that dhcpd ran (and is running) perfectly under CentOS-5.6 , but not under CentOS-6.
I have not yet moved my dhcpd servers to CentOS 6. Actually, nothing outside the lab uses EL6. :)