6lowpan raw socket problems

[Simon Vincent <simon.vincent@xsilon.com>]

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?

Regards
Simon