F5-421 Ethernet Adapters Disappear

[R4nd0m]

This is not a new issue, but I recently rebuilt my NAS from scratch to 5.1.67 and had hoped this might resolve my issue at the same time

F5-421 has 4 ethernet adapters all cabled to dumb switch

On initial build I can see all 4 nics and successfully create a bond
But on subsequent reboots I lose eth3 then eth2 ending up with a bond of 2, eth0 & eth1

I have scanned my system and can find no reference relating to eth2 or eth3
'/etc/network' contains details for them, but that is it

If a new firmware gets applied, all 4 nics will reappear but then disappear again after a couple of reboots

It's not the end of the world as only used for Plex, but very frustrating when the nics can/do work but disappear

I notice new hardware doesn't come with 4 nics anymore, so assume this might be a known problem

Any advise on getting nics re-added please?

[TMzethar]

Regarding the issue you have encountered, please generate and download the log report it arises in TOS > Technical Support > Problem Report, and then send it to our support mailbox as a network disk sharing link for analysis.