On Thu, Nov 19, 2020 at 10:58:33AM +0100, Georg Kohmann wrote:
> IPV6=m
> NF_DEFRAG_IPV6=y
>
> ld: net/ipv6/netfilter/nf_conntrack_reasm.o: in function
> `nf_ct_frag6_gather':
> net/ipv6/netfilter/nf_conntrack_reasm.c:462: undefined reference to
> `ipv6_frag_thdr_truncated'
>
> Netfilter is depending on ipv6 symbol ipv6_frag_thdr_truncated. This
> dependency is forcing IPV6=y.
>
> Remove this dependency by moving ipv6_frag_thdr_truncated out of ipv6. This
> is the same solution as used with a similar issues: Referring to
> commit 70b095c843266 ("ipv6: remove dependency of nf_defrag_ipv6 on ipv6
> module")
>
> Fixes: 9d9e937b1c8b ("ipv6/netfilter: Discard first fragment not including all headers")
> Reported-by: Randy Dunlap <rdunlap@xxxxxxxxxxxxx>
> Reported-by: kernel test robot <lkp@xxxxxxxxx>
> Signed-off-by: Georg Kohmann <geokohma@xxxxxxxxx>
Acked-by: Pablo Neira Ayuso <pablo@xxxxxxxxxxxxx>
Thanks.
