Hi all,
the function nfq_udp_compute_checksum_ipv4 (src/extra/udp.c) does not
compute the correct UDP checksum.
The issue is caused by the called function checksum_tcpudp_ipv4()
(src/extra/checksum.c) that uses the hard coded protocol id IPPROTO_TCP
which is fine for TCP but fails for UDP.
A possible solution might be to pass the protocol id (IPPROTO_TCP /
IPPROTOC_UDP) as parameter to the function checksum_tcpudp_ipv4().
The very same is also true for the IPv6 versions of these functions.
Any feedback is welcome.
Best regards
Mathias
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