r0 = socket$inet6_tcp(0xa, 0x1, 0x0) ioctl$sock_inet6_SIOCADDRT(r0, 0x890b, &(0x7f0000000180)={@ipv4={'\x00', '\xff\xff', @empty}, @local, @dev, 0x0, 0x0, 0x0, 0x0, 0x0, 0x80c0003f})