UbuntuでPlanex GU-1000T

$ lsusb

Bus 004 Device 005: ID 0b95:1780 ASIX Electronics Corp.

[ 897.415497] eth0: register 'asix' at usb-0000:00:1d.7-5, ASIX AX88178 USB 2.0 Ethernet, 00:90:cc:c4:07:c2

UbuntuでPlanex GU-1000Tは，100Base-Tのハブだと使えないようだ．GigaHubに繋ぐとパケットが飛ぶようになった．