I am going to go out on a limb and say your "wireless ap" is actually a wireless broadband router and has NAT enabled. Thus you cant ping from 0.x to 1.x , but you should be able to ping from 1.x to 0.x. This is a basic feature of nat and unless you have a static entry with a translation it isn't possible. I recommend you follow the above suggestion and get another NIC for your ipcop box.