OMV multiple NICs - onboard appears to take priority?

Hi all

OS: OMV 6.9.16-1 (Shaitan) - up to date

Been using OMV for a few years now but I certainly don't consider myself a pro with it.

Anyway, I've setup my OMV that has the following NICs:

1 x onboard NIC

1 x dual port HP NC360T Dual-Port Gigabit NIC PCI-E

So the way I have it setup is like so

Onboard NIC - (on VLAN 2) 10.7.32.x 255.255.255.0 - this NIC has WOL enabled and it works well. WOL works everytime - I use WOL from my smartphone, on the same VLAN

The Dual Port HP NIC is on another VLAN set up as a bond with IP 10.7.12.x 255.255.255.0

Firewall rules are in place - I can ping the OMV's dual NIC IP etc.

Plex seems to work fine when pointing it manually to the bonded 10.7.12.x IP

However, I've recently noticed that if I'm watching something on Plex, all the traffic appears to go through the onboard NIC, not the dual NIC. My guess is because the device I'm streaming from (TV, phone) are on the same VLAN as the onboard NIC - i.e 10.7.32.x /24

I've tried port isolation and even intra-vlan rules to 'deny' traffic from the onboard NIC to OMV/Plex. Nothing seems to work. It's like OMV is favouring the onboard NIC over the dual-NIC card.

Is there some sort of way to 'force' OMV to use a primary NIC? Ideally I just want the onboard NIC to deal with the initial WOL packet then the dual NIC does everything else, including streaming content from plex.

Apologies if this is confusing. There might be an easier way to do this and I'm just over complicating matters.

Thanks all

Quote from fbeye

Would removing the Gateway on the On-Board NIC do anything to assist the situation?

Hi fbeye

The ‘WOL’ NIC only has an IP and subnet, no gateway or DNS.

Thanks

Quote from ryecoaaron

Assuming you are only worried about outgoing traffic, I would assume setting route metric higher for the bond than the individual interface. I just don't remember if that was an omv6 feature. It is in omv7 (which I highly recommend upgrading to).

Hi ryecoaaron

I haven’t poked around too much but I can’t remember seeing route metric in the GUI for OMV 6. I’ll take a look

Not a bad idea. I did think about upgrading to OMV 7. Is the process still fairly straight forward? I’m using docker with portainer for plex and transmission. Will it break anything?

Thanks

Thanks Ryecoaaron

I've upgraded successfully to version 7.

Unless I'm doing something wrong, I've set the ipv4 'metric' to 0 on the bond and '1' on the single 'WOL' NIC

I've also tried it in reverse - so Bond metric 1, WOL NIC - 0

Traffic is still pushing through the WOL NIC when I stream from Plex

Either I've set the metric wrong, or it's something else - admittedly I haven't restarted the OMV since changing the metric.

Thanks! I'll try the suggestion later

ryecoaaron - that worked a treat. Many thanks for your help!