r0 = socket$inet6_icmp_raw(0xa, 0x3, 0x3a)
sendmsg(r0, &(0x7f00000000c0)={&(0x7f0000000140)=@l2tp6={0xa, 0x0, 0x0, @mcast1}, 0x80, &(0x7f0000000100)=[{&(0x7f0000000080)='\x00\x00\x00\x00', 0x4}], 0x5}, 0x0)