r0 = socket$inet_udp(0x2, 0x2, 0x0)
ioctl$sock_inet_SIOCGARP(r0, 0x8955, &(0x7f0000000100)={{0x2, 0x0, @empty}, {0x304, @multicast}, 0x14, {0x2, 0x0, @loopback}})