Commit c4d3efaf authored by Committed by David S. MillerBrowse files
[IPV6] IP6TUNNEL: Add support to IPv4 over IPv6 tunnel.
Some notes - Protocol number IPPROTO_IPIP is used for IPv4 over IPv6 packets. - If IP6_TNL_F_USE_ORIG_TCLASS is set, TOS in IPv4 header is copied to Traffic Class in outer IPv6 header on xmit. - IP6_TNL_F_USE_ORIG_FLOWLABEL is ignored on xmit of IPv4 packets, because IPv4 header does not have flow label. - Kernel sends ICMP error if IPv4 packet is too big on xmit, even if DF flag is not set. Signed-off-by: Yasuyuki Kozakai <email@example.com> Signed-off-by: YOSHIFUJI Hideaki <firstname.lastname@example.org> Signed-off-by: David S. Miller <email@example.com>