2015-07-24 16:51 GMT+02:00 Stefan Schmidt <stefan@xxxxxxxxxxxxxxx>: > Hello. > > On 24/07/15 16:45, Baptiste Clenet wrote: >> >> 2015-07-24 15:07 GMT+02:00 Alexander Aring <alex.aring@xxxxxxxxx>: >>> >>> On Fri, Jul 24, 2015 at 02:53:52PM +0200, Baptiste Clenet wrote: >>> ... >>>> >>>> Yes if SAC = 1, SAM should be 0 I agree. >>>> >>>> Is that somehow possible that I send ihpc of 7b39 (taken at the end of >>>> lowpan_header_compress) and I receive and iphc of 7bf9 (taken at the >>>> begginning of lowpan_header_decompress) every time?? >>>> >>> So far I know that is not possible. I think you need to debug it, do you >>> have maybe some kind of monitor interface to see what on the air? >>> >> Here is what tcpdump gives me when I receive a message: >> >> 13:15:40.253868 P ethertype Unknown (0x00f6), length 82: >> 0x0000: 41c8 13ef beff ff56 7863 ed54 89a7 cffb A >> ......Vxc.T.... >> 0x0010: f93a 0201 ff34 1234 8700 a5ee 0000 0000 >> .:...4.4........ >> 0x0020: fe80 0000 0000 0000 1234 1234 1234 1234 >> .........4.4.4.4 >> 0x0030: 0102 cfa7 8954 ede3 7856 0000 0000 0000 >> .....T..xV...... >> 0x0040: 05c7 >> >> There is neither 7b39 or 7bf9. >> Can't use tshark on openwrt. > > > That makes it harder as neccassary for debugging. Either try to use > something like netcat to bring the stream to you host and look at it with > wireshark or save it as pcap file, transfer it to your host and look at it > with wireshark. > > Doing it like above is really error prone. Why would you make your life > harder as you should? :) Ok, will try with netcat as soon as I can, thanks. > >> >> Btw, why can't I add lowpan0 on top of monitor0? >> root@OpenWrt:/# ip link add link monitor0 name lowpan0 type lowpan >> RTNETLINK answers: Invalid argument > > > Hmm, why would you want to do that? A monitor interface should give you all > the information you need during sniffing. For what do you want to add a > lowpan interface on top? I would like to send IPV6 packet (ping6) through the interface lowpan0. I think I misunderstood something here about sniffing packet and interface. Should I have lowpan monitor interface instead of the wpan monitor? > > regards > Stefan Schmidt -- Baptiste -- To unsubscribe from this list: send the line "unsubscribe linux-wpan" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
