It isn't. It's a pure driver bug with all of these. There's a pending patch to clear the MSI registers on disconnect that I'm planning on driving to testing tom

It isn't. It's a pure driver bug with all of these. There's a pending patch to clear the MSI registers on disconnect that I'm planning on driving to testing tomorrow. I hounded them for 4 months by sending full stacks with symbols and they don't have any hardware in the lab (which is very common now, unfortunately)... If you want to recover, set a ifdown script to `rmmod igc && modprobe igc` and you will never panic or hang, just have a longer interface bounce time. I'm running this on a 6 nic system which is completely egregious, but it hasn't crashed / hung / panic'd in the field since doing that.