Stuart Henderson writes:
> We do support TSO on some em(4). Though, while I am not certain, I don't
> think we do on I219-V... Anthony, do you still have that machine available?
> Can you do an "ifconfig em hwfeatures" please so we can be sure?
$ ifconfig em0 hwfeatures
em0: flags=808843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST,AUTOCONF4> mtu 1500
hwfeatures=36<CSUM_TCPv4,CSUM_UDPv4,VLAN_MTU,VLAN_HWTAGGING> hardmtu
9216
lladdr 94:c6:91:a3:6d:8a
index 2 priority 0 llprio 3
groups: egress
media: Ethernet autoselect (1000baseT full-duplex)
status: active
inet 10.0.0.15 netmask 0xffffff00 broadcast 10.0.0.255
