r0 = socket$inet_udp(0x2, 0x2, 0x0)
ioctl$sock_inet_SIOCDELRT(r0, 0x890c, &(0x7f00000000c0)={0x0, {}, {0x2, 0x0, @initdev={0xac, 0x1e, 0x0, 0x0}}, {0x2, 0x0, @broadcast}, 0x0, 0x0, 0x0, 0x0, 0x0, &(0x7f0000000080)='syz_tun\x00'})