r0 = socket$inet6_tcp(0xa, 0x1, 0x0)
setsockopt$inet6_tcp_TCP_MD5SIG(r0, 0x6, 0xe, &(0x7f00000043c0)={@in6={{0xa, 0x0, 0x0, @ipv4={'\x00', '\xff\xff', @multicast1}}}, 0x0, 0x0, 0x0, 0x0, "2b33aa575ea3a68b30cb91fb7d5e0e8ca91b9dfb24b3b0bb0fcf401c23c53a8775a5bb9efb8f144d005fa2d7692d35a3803da525340d25769c9c98177508599ce4b8c074d6cc53083c9597a847ec4e53"}, 0xd8)