In D5675#149247, @cem wrote:

I can commit it for you, but I'd like wider review (i.e. someone other than me signing off on it) before I do so.

In D4788#102332, @sbruno wrote:

Is this a potential MFC to stable/10 candidate?

Incase your interested sbruno@.

I'd prefer that the dhcp issue not hold this up. I'll try to get another change created for that or log a bugzilla report should it prove beyond me.

Having a look at my linux instance. I suspect it is not the Inytel driver setting the MTU to 9001 automatically. It looks to be dhclient.

Did some iperf3 tests to check how things perform. I believe without setting the MTU manually to 9001 first before testing, a MTU blackhole exists which ruins things. Not only does setting the MTU to 9001 manually fix the MTU blackhole reducing the retransmits(and UDP packet loss) but it also reduces CPU usage fairly significantly. It's a shame this isn't being set automatically.