Comment 7 for bug 1463911

Setting the MTU on the tap, bridge and veth pair to something high seems to fix it in my rudimentary testing.

for int in $(ifconfig | grep 1234abcd | grep -v qbr | awk '{ print $1 }'); do sudo ifconfig $int mtu 9000; done

Where "1234abcd" is the first part of the VM port's UUID.