r0 = socket$inet6_tcp(0xa, 0x1, 0x0)
setsockopt$inet6_int(r0, 0x29, 0x1a, &(0x7f00000001c0)=0x1, 0x4)
bind$inet6(r0, &(0x7f0000000140)={0xa, 0x0, 0x0, @ipv4={'\x00', '\xff\xff', @empty}}, 0x1c)