netfilter: nf_dup_ipv6: set again FLOWI_FLAG_KNOWN_NH at flowi6_flags
With the commit48e8aa6e31
("ipv6: Set FLOWI_FLAG_KNOWN_NH at flowi6_flags") ip6_pol_route() callers were asked to to set the FLOWI_FLAG_KNOWN_NH properly and xt_TEE was updated accordingly, but with the later refactor in commitbbde9fc182
("netfilter: factor out packet duplication for IPv4/IPv6") the flowi6_flags update was lost. This commit re-add it just before the routing decision. Fixes:bbde9fc182
("netfilter: factor out packet duplication for IPv4/IPv6") Signed-off-by: Paolo Abeni <pabeni@redhat.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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@ -33,6 +33,7 @@ static bool nf_dup_ipv6_route(struct net *net, struct sk_buff *skb,
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fl6.daddr = *gw;
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fl6.flowlabel = (__force __be32)(((iph->flow_lbl[0] & 0xF) << 16) |
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(iph->flow_lbl[1] << 8) | iph->flow_lbl[2]);
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fl6.flowi6_flags = FLOWI_FLAG_KNOWN_NH;
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dst = ip6_route_output(net, NULL, &fl6);
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if (dst->error) {
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dst_release(dst);
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