Try adding this in the /boot/loader.conf
kern.ipc.nmbclusters="655356"
machdep.hyperthreading_allowed="0"
hw.igb.num_queues="4"
Then reboot.
I've had similar dropout issues with igb interfaces and this fixed it.
Try adding this in the /boot/loader.conf
kern.ipc.nmbclusters="655356"
machdep.hyperthreading_allowed="0"
hw.igb.num_queues="4"
Then reboot.
I've had similar dropout issues with igb interfaces and this fixed it.