diff options
| author | Matthias Schiffer <mschiffer@universe-factory.net> | 2013-03-30 10:23:12 +0000 |
|---|---|---|
| committer | Pablo Neira Ayuso <pablo@netfilter.org> | 2013-04-03 12:24:56 +0200 |
| commit | 906b1c394d0906a154fbdc904ca506bceb515756 (patch) | |
| tree | f222e6dc6a92465710e75f57c96e1bf4bb858250 /net | |
| parent | 5389090b59f7f72a30e25f5fd1fc560340543970 (diff) | |
netfilter: ip6t_NPT: Fix translation for non-multiple of 32 prefix lengths
The bitmask used for the prefix mangling was being calculated
incorrectly, leading to the wrong part of the address being replaced
when the prefix length wasn't a multiple of 32.
Signed-off-by: Matthias Schiffer <mschiffer@universe-factory.net>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Diffstat (limited to 'net')
| -rw-r--r-- | net/ipv6/netfilter/ip6t_NPT.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/net/ipv6/netfilter/ip6t_NPT.c b/net/ipv6/netfilter/ip6t_NPT.c index 33608c610276..cb631143721c 100644 --- a/net/ipv6/netfilter/ip6t_NPT.c +++ b/net/ipv6/netfilter/ip6t_NPT.c @@ -57,7 +57,7 @@ static bool ip6t_npt_map_pfx(const struct ip6t_npt_tginfo *npt, if (pfx_len - i >= 32) mask = 0; else - mask = htonl(~((1 << (pfx_len - i)) - 1)); + mask = htonl((1 << (i - pfx_len + 32)) - 1); idx = i / 32; addr->s6_addr32[idx] &= mask; |