r0 = socket$inet6_tcp(0xa, 0x1, 0x0)
setsockopt$inet6_tcp_TCP_MD5SIG(r0, 0x6, 0xe, &(0x7f00000017c0)={@in={{0x2, 0x0, @loopback}}, 0x0, 0x0, 0x0, 0x0, "b1371cbd21e5518c685a37c3884f19808a4c21ff184ccf96960a148659ccae1394880357bf81fa06810f3f70a70cf0fd30f286c024f5feb54947784c6a71921ea3f4d727aee5032c68d0ae06d84847e9"}, 0xd8)