Ethernet interface number changed, and old one does not exist, but does not leave IP address

Posted by Sagar on Server Fault See other posts from Server Fault or by Sagar
Published on 2010-10-01T13:43:36Z Indexed on 2010/12/22 13:56 UTC
Read the original article Hit count: 562

Filed under:

linux

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networking

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ip

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ip-address

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static-ip

I have a virtual machine with Mandriva 2007.0 (yes, old - unfortunately we do not have a choice here). Anyway, the problem:

Before reboot: active network interface = eth0. No other interfaces present, and network manager confirms this. Static IP address set to 172.31.2.22. No issues, everything working properly, routing et al.

-------Reboot---------

After reboot: active network interface = eth1, with a DHCP address. Network manager shows eth0 as disconnected, and not connectable. When I try to set eth1 up with the static IP address (same one), it says "In Use". I then tried ifconfig eth0 172.31.2.29 just to free it up from the eth0 interface so I could use it with eth1 (since this is connected).

Result:

ifconfig eth0 172.31.2.29
SIOCSIFADDR: No such device
eth0: unknown interface: No such device

Nothing else changed. Any ideas what could be happening, or at least how I can get my IP address back?

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