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ipv6 RAW: Disallow IPPROTO_IPV6-level IPV6_CHECKSUM socket option on …
…ICMPv6 sockets. RFC3542 tells that IPV6_CHECKSUM socket option in the IPPROTO_IPV6 level is not allowed on ICMPv6 sockets. IPPROTO_RAW level IPV6_CHECKSUM socket option (a Linux extension) is still allowed. Signed-off-by: YOSHIFUJI Hideaki <[email protected]> Signed-off-by: David S. Miller <[email protected]>