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Help with 10Gb/MTU/Jails

Joined
Jan 31, 2017
Messages
37
Thanks
2
#1
FreeNAS 11.2 U5
Supermicro X8-dth
Xeon x5680 (x2)
48GB ECC RAM
Melanox 10Gb NIC

Not sure if I should post this in Networking or Jails, but this is probably more networking related.

I have been using plugins for plex, radarr, etc. Recently I have decided to start the jails over and rebuild everything from scratch as a jail instead of a plugin, following this guide here. I have been using jumbo packets with mtu 9000 in my nic options because that is the only way I am able to sustain 10Gb speeds using iperf. This creates a problem when I install a jail because I receive an error about bridge0: invalid MTU, and this causes the jail to not start upon boot. The jail will start manually just fine. If I remove the mtu 9000 from my NIC options, then the jail will start normally upon reboot, but when I test with iperf I am unable to get much more than 3-4 Gb/s. Is there anyway to create the jail with the mtu 9000 so it doesnt say invalid, or am I missing something?

Thank you.
 
Joined
Jan 31, 2017
Messages
37
Thanks
2
#2
I went in and changed one of the two jails I currently have created to DHCP, and now they are both starting automatically.
 
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