Last night when we rebooted one of our servers, the main network eth0 came up on the allocated IP address but the other addresses that should have come up did not do so. I'm trying to understand why.
As a result, I'm concerned that the interfaces file may not be set up properly.
# This file describes the network interfaces available on your system
# and how to activate them. For more information, see interfaces(5).
# The loopback network interface
iface lo inet loopback
# The primary network interface
allow-hotplug eth0 eth0:2 eth0:6
iface eth0 inet static
# dns-* options are implemented by the resolvconf package, if installed
dns-nameservers n.o.p.q r.s.t.u
iface eth0:2 inet static
iface eth0:6 inet static
If this is right (and having booted the server on a couple of occasions previously, I see no reason for it not to be), I should get:
- eth0: - x.y.36.15
- eth0:6 - x.y.36.215
- eth0:2 - x.y.37.124
Is this assertion correct?
Also having looked through syslog, messages, dmesg, and a couple of other files, I can't see anything obvious and am beginning to think that the server just "froze". Any other ideas of where to look would be gratefully received.