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Added dissector_sll.c which uses sockaddr_ll to lookup & print
higher L3 layer protocol.
This dissector is mapped by LINKTYPE_LINUX_SLL link type.
Sample output of dissected Netlink & Ethernet packets.
Truncated manually some longer lines by "...":
> nlmon0 20 1434193547s.717131169ns #6
[ Linux "cooked" Pkt Type 4 (outgoing), If Type 824 (netlink), Addr Len 0, Src (), Proto 0x0 ]
[ NLMSG Family 0 (routing), Len 20, Type 0x0003 (DONE)...
> wlp3s0 52 1434194181s.436224709ns #9
[ Linux "cooked" Pkt Type 4 (outgoing), If Type 1 (ether), Addr Len 6, Src (XX:XX:XX:XX:XX:XX), Proto 0x800 ]
[ IPv4 Addr (XXX.XXX.XXX.XXX => 212.42.76.253), Proto (6), TTL (64), TOS (0), ...
), CSum (0x1ef5) is ok ]
[ Geo (local => Ukraine) ]
[ TCP Port (45849 => 443 (https)), SN (0x1744209), AN (0x46ca9611), DataOff (8) ...
[ Chr .....w.Rj).. ]
[ Hex XX XX XX XX XX XX XX XX XX XX XX XX ]
Signed-off-by: Vadim Kochan <vadim4j@gmail.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
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