[arch-general] Why does network interface sometimes change name?

Felix E. Klee felix.klee at inka.de
Mon Apr 6 19:57:31 UTC 2015

On Mon, Apr 6, 2015 at 7:34 PM, Guus Snijders <gsnijders at gmail.com> wrote:
> First make sure that vmware always uses the same mac address for this
> vm.

If the MAC address changes, I would expect the name to change from
`eno16777736` to something like `eno52423433`. I wouldn’t expect it to
change to `eth0`.

Anyhow, it could be interesting to watch for changes. Currently the
interface is named `eth0` with `00:0c:29:12:0e:9e` as MAC address:

    $ ifconfig eth0
    eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
            inet  netmask  broadcast
            inet6 fe80::7e13:1a20:5a2a:75b8  prefixlen 64  scopeid 0x20<link>
            ether 00:0c:29:12:0e:9e  txqueuelen 1000  (Ethernet)
            RX packets 75773  bytes 81703677 (77.9 MiB)
            RX errors 1  dropped 0  overruns 0  frame 0
            TX packets 33366  bytes 2056250 (1.9 MiB)
            TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
            device interrupt 19  base 0x2000

Perhaps someone can tell from the above output what’s happening.

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