r0 = socket$inet_udp(0x2, 0x2, 0x0)
connect$inet(r0, &(0x7f00000000c0)={0x2, 0x0, @loopback}, 0x10)
setsockopt$inet_mreq(r0, 0x0, 0x23, &(0x7f0000000640)={@multicast2, @dev}, 0x8)