r0 = socket$inet_udp(0x2, 0x2, 0x0)
ioctl$sock_inet_SIOCSARP(r0, 0x8955, &(0x7f0000000280)={{0x2, 0x0, @dev}, {0x306, @random="bfc3ce591de8"}, 0x0, {0x2, 0x0, @loopback}, 'lo\x00'})