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netfilter: ip6t_NPT: Fix prefix mangling

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Make sure only the bits that are part of the prefix are mangled.

Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
This commit is contained in:
YOSHIFUJI Hideaki / 吉藤英明 2013-01-26 08:38:44 +00:00 • committed by Pablo Neira Ayuso
commit d4c38fa87d
1 changed files with 1 additions and 1 deletions
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2
net/ipv6/netfilter/ip6t_NPT.c
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@ -51,7 +51,7 @@ static bool ip6t_npt_map_pfx(const struct ip6t_npt_tginfo *npt,
idx = i / 32;
addr->s6_addr32[idx] &= mask;
addr->s6_addr32[idx] |= npt->dst_pfx.in6.s6_addr32[idx];
addr->s6_addr32[idx] |= ~mask & npt->dst_pfx.in6.s6_addr32[idx];
}
if (pfx_len <= 48)