[IPV6] MIP6: Ignore to report if mobility headers is rejected.
Ignore to report user-space for known mobility headers rejected by destination options header transformation. Mobile IPv6 specification (RFC3775) says that mobility header is used with destination options header carrying home address option only for binding update message. Other type message cannot be used and node must drop it silently (and must not send binding error) if receving such packet. To achieve it, (1) application should use transformation policy and wild-card states to catch binding update message prior other packets (2) kernel doesn't report the reject to user-space not to send binding error message by application. This patch is for (2). Based on MIPL2 kernel patch. This patch was also written by: Ville Nuorvala <vnuorval@tcs.hut.fi> Signed-off-by: NMasahide NAKAMURA <nakam@linux-ipv6.org> Signed-off-by: NYOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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