eth0 keeps dissapearing

Hi,

Running OMV 2 with all the updates applied in a VM on ProxMox server.
I am passing through (with no issues) a SATS SAS Card, a physical network card and an onboard USB device.
Assigned 2vcpus and 4gb ram as well as a virtual NIC - will use the physical NIC for all traffic and virtual NIC for management only.
Adding SnapRaid (and configure) + MergerFS (and configure) - all is OK and working as expected.
However, after the first reboot eth0 just dissapears. While listed under /etc/network/interfaces (with all correct settings for IP, GW, etc) is not up and ifup eth0 al says cant find eth0

Anyone seen this before? Can it be fixed somehow?

Thanks

Thanks for the suggestion. I have tried but my eth0 is really gone I think:

root@OMV:~# ifconfig eth0 192.168.0.177 netmask 255.255.255.0 up
SIOCSIFADDR: No such device
eth0: ERROR while getting interface flags: No such device
SIOCSIFNETMASK: No such device
eth0: ERROR while getting interface flags: No such device
root@OMV:~#

I will go and read the URL you mentioned...maybe something in there

Edit: no I cannot ping the IP address of eth0

More info from dmesg:

[ 1.747534] e1000e 0000:02:00.0: eth0: (PCI Express:2.5GT/s:Width x1) xx:xxxx:xx:xx:xx
[ 1.747535] e1000e 0000:02:00.0: eth0: Intel(R) PRO/1000 Network Connection
[ 1.747546] e1000e 0000:02:00.0: eth0: MAC: 3, PHY: 8, PBA No: E46981-007
...
[ 3.852242] udevd[465]: renamed network interface eth0 to rename2

Seems that my physical NIC takes over the eth0 name? But an ifconfig now shows:

eth1 Link encap:Ethernet HWaddr xx:xxxx:xx:xx:xx
inet addr:192.168.x.x Bcast:192.168.x.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:46823 errors:0 dropped:0 overruns:0 frame:0
TX packets:2074 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000

confused ...according to dmesg the above physical NIC should be eth0 now...but it isn't
RX bytes:9642132 (9.1 MiB) TX bytes:4618197 (4.4 MiB)

I have found a solution in one of the Ubuntu forums

vi /etc/default/grub
GRUB_CMDLINE_LINUX_DEFAULT="net.ifnames=1 biosdevname=0"
sudo update-grub
reboot

worked fine - got both NICs back and working

Can someone with more experience than me confirm that I am not doing anything silly by adding the above to Grub?