ipv6: only apply anti-spoofing checks to not-pointopoint tunnels
Because of commit 218774dc ("ipv6: add anti-spoofing checks for 6to4 and 6rd") the sit driver dropped packets for 2002::/16 destinations and sources even when configured to work as a tunnel with fixed endpoint. We may only apply the 6rd/6to4 anti-spoofing checks if the device is not in pointopoint mode. This was an oversight from me in the above commit, sorry. Thanks to Roman Mamedov for reporting this! Reported-by: NRoman Mamedov <rm@romanrm.ru> Cc: David Miller <davem@davemloft.net> Cc: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: NHannes Frederic Sowa <hannes@stressinduktion.org> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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