On Fri, 2012-02-17 at 13:12 +0100, Bjørn Mork wrote: > Bjørn Mork <bjorn@xxxxxxx> writes: > > >> I do see the IPv6 address in the WMC dumps > >> from the WMC port though. I don't recall ever seeing the IPv6 > >> addressing details happening over QMI, but I'd have to do another dump > >> to be sure. Windows might actually be listenting for RAs on the > >> interface, since ISTR that's officially supported in the 3GPP standards. > >> It's certainly mentioned in the eHRPD stuff for handoff between LTE and > >> EVDO. > > > > So there is a global IPv6 address (or prefix?) assigned? And you can > > forward IPv6 traffic using it as a source address? > > > > Damn, I need an IPv6 enabled network. Think I know someone to poke... > > Yup, but not too successful just yet. I got connected and could see > IPv6 addresses using QMI_WDS command 2d (removed the APN from this to > protect the guilty :-): > > <= QMUX Header: > <= len: 0x00bb > <= sender: 0x80 > <= svc: 0x01 > <= cid: 0x04 > > <= QMI Header: > <= Flags: 0x02 > <= TXN: 0x0006 > <= Cmd: 0x002d > <= Size: 0x00af > <= [0x02] ( 4) 00 00 00 00 SUCCESS - QMI_ERR_NONE > <= [0x10] ( 9) 70 72 6f 66 69 6c 65 31 36 profile16 > <= [0x11] ( 1) 03 . > <= [0x17] (33) 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................................. > <= [0x1d] ( 1) 00 . > <= [0x1f] ( 2) 00 10 .. > <= [0x22] ( 1) 00 . > <= [0x24] ( 1) 00 . > <= [0x25] (17) 2a 02 21 21 00 00 00 04 20 d5 68 81 7e 0e e7 c0 40 *.!!.... .h.~...@ > <= [0x26] (17) 2a 02 21 21 00 00 00 04 0c d0 94 91 d2 96 c1 34 40 *.!!...........4@ > <= [0x27] (16) 20 01 46 00 00 04 00 00 00 00 00 00 00 01 00 53 .F............S > <= [0x28] (16) 20 01 46 00 00 04 10 00 00 00 00 00 00 01 00 53 .F............S > <= [0x2e] ( 1) 00 . > > > TLV 0x27 and 0x28 are the correct DNS servers. And 0x25 and 0x26 are > sane looking addresses for my interface and the gateway (the trailing 40 > is just the prefix length). > > But I did not get any response from the modem to neither icmp6 RS nor > DHCPv6 solicitations. And configuring the address manually was sort of > cumbersome. Looks like the modem does proxy neigbour discovery like it > does proxy ARP, and that makes DAD fail... I had to do > "echo 0 >/proc/sys/net/ipv6/conf/wwan2/dad_transmits" > to make the address usable. > > We did manage to pick up the packets on the other end, but never > reveived any replies so the link was never fully functional. I suspect > that this might be related to the address configuration stuff as the > modem also disconnected after a while, like it does with IPv4 > connections if you don't run DHCP or call QMI_WDS command 2d. Note that > this happened even if I did call the latter. > > So there are a few bits and pieces to figure out still wrt IPv6 address > configuration. I certainly hope that this doesn't mean that we are > required to use WMC for IPv6.... WMC is almost certainly not required, since it's only implemented in some Pantech modems (not just Gobi-derived devices, but older CDMA-only ones too). It's just an API that Pantech adds to some of their modems that their Windows driver uses for some stuff. Like vendors adding proprietary AT commands. It might just be that they decided to use the WMC commands instead of the QMI ones here. Dan -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
