@cached_property<EOL><INDENT>def icmpv6(self):<DEDENT>
ipproto, proto_start = self.protocol<EOL>if ipproto == Protocol.ICMPV6:<EOL><INDENT>return ICMPv6Header(self, proto_start)<EOL><DEDENT>
- An ICMPv6Header instance, if the packet is valid ICMPv6.
- None, otherwise.