Hi Simon, On Tue, Sep 02, 2014 at 03:21:56PM +0100, Simon Vincent wrote: > I am having problems with raw sockets on a 6lowpan 802.15.4 interface. The > code works correctly on an ethernet ipv6 interface but not on a 6lowpan > interface. In the 6lowpan interface I receive packets but I find the src and > dest addresses are incorrect. > > I open the socket like this: > socket(AF_INET6, SOCK_RAW, IPPROTO_ICMPV6); > > Add options for IPV6_RECVPKTINFO, IPV6_CHECKSUM, IPV6_RECVHOPLIMIT. > > I then receive a packet using recvmsg and attempt to get the source address. > The source address is rubbish. Also trying to get the destination address > from IPV6_PKTINFO using CMSG_FIRSTHDR results in rubbish. > > Can anyone explain why? Is there something different I have to do when using > 802.15.4 and 6lowpan? > Can you please send a test programm for this as example? Then I/We will look at why this happen. I think this would be the best to find why you have this issue. Doesn't need to be the full program only a small example. What I can say actually is: To send ICMPv6 packets from userspace you need RAW-Sockets. This is how ping6 do it and ping6 works on my side. Maybe there is a issue because some of your sockopts. - Alex -- 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
