I finally broke down and patched the kernel. There are discussions here: http://www.linuxquestions.org/questions/linux-networking-3/host-to-host-cable%3B-no-usb0-779573/ http://www.coding.com.br/usb/suporte-para-o-cabo-usb-host-to-host-prolific-pl-25a1-no-linux/
and a patch here http://www.mail-archive.com/netdev@vger.kernel.org/msg61926.html which does nothing but add ids for the 25A1... any reason this can't be incorporated, seems pretty tame. static const struct usb_device_id products [] = { + /* full speed cables */ + { + USB_DEVICE(0x067b, 0x0000), /* PL-2301 */ + .driver_info = (unsigned long) &prolific_info, + }, { + USB_DEVICE(0x067b, 0x0001), /* PL-2302 */ + .driver_info = (unsigned long) &prolific_info, + }, + + /* high speed cables */ + { + USB_DEVICE(0x067b, 0x25a1), /* PL-25A1, no eeprom */ + .driver_info = (unsigned long) &prolific_info, + }, { + USB_DEVICE(0x050d, 0x258a), /* Belkin F5U258 (PL-25A1) */ + .driver_info = (unsigned long) &prolific_info, + }, -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/516923 Title: usb0 network not enabled with Prolific Technology, Inc. PL25A1 Host- Host Bridge -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs