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Mark Tomlinson authored
When receiving an IPv4 packet inside an IPv6 GRE packet, and the IP6_TNL_F_RCV_DSCP_COPY flag is set on the tunnel, the IPv4 header would get corrupted. This is due to the common ip6_tnl_rcv() function assuming that the inner header is always IPv6. This patch checks the tunnel protocol for IPv4 inner packets, but still defaults to IPv6. Fixes: 308edfdf ("gre6: Cleanup GREv6 receive path, call common GRE functions") Signed-off-by:
Mark Tomlinson <mark.tomlinson@alliedtelesis.co.nz> Signed-off-by:
David S. Miller <davem@davemloft.net>
272502fc