r0 = socket$inet6_tcp(0xa, 0x1, 0x0)
setsockopt$inet6_int(r0, 0x29, 0x21, &(0x7f0000002c80)=0xfffffffa, 0x4)
connect$inet6(r0, &(0x7f0000000000)={0xa, 0x0, 0x6a245657, @loopback}, 0x1c)