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<blockquote data-quote="MacInWin" data-source="post: 1833651" data-attributes="member: 396914">IP numbers come with a &quot;lease&quot; which normally has a time associated with it. After that time limit, the device asks for a renewal of that lease from the router. If, for any reason, the lease has already expired before the device asks for the new lease, that number may have been assigned to another user and the router has to issue a new one in the range it controls. I think that is what Ashwin was talking about. Another way it can happen is the device gets out of range of the router before the lease expires, loses contact, then comes back in range and asks for the lease to be renewed. Again, if it's available, no problem, but if not, a new IP is issued. So that is how it works. In your case, Ratsima, if you walk into the shop with that SSID set to &quot;fixed IP&quot; as you said you have done, then when the router communicates, the iPhone does NOT ask for an IP and as long as nobody else has that fixed IP, it should work. But if there is another user on that number, both will get an error about duplication. If you then switch to the DHCP mode, the iPhone will ask the router for a suitable number, and it should issue one in the range it controls, if there is one not currently leased. As for the blocks in different locations, that should not matter. The iPhone doesn't know what the range is that the router controls, and really doesn't care. All it does is request an address and when it has one, uses it. And the fact that store 1 uses range X but store 2 uses range Y doesn't matter to the iPhone at all. All it &quot;knows&quot; is that it asked for an IP and got one. (or not)</blockquote>

[QUOTE="MacInWin, post: 1833651, member: 396914"] IP numbers come with a "lease" which normally has a time associated with it. After that time limit, the device asks for a renewal of that lease from the router. If, for any reason, the lease has already expired before the device asks for the new lease, that number may have been assigned to another user and the router has to issue a new one in the range it controls. I think that is what Ashwin was talking about. Another way it can happen is the device gets out of range of the router before the lease expires, loses contact, then comes back in range and asks for the lease to be renewed. Again, if it's available, no problem, but if not, a new IP is issued. So that is how it works. In your case, Ratsima, if you walk into the shop with that SSID set to "fixed IP" as you said you have done, then when the router communicates, the iPhone does NOT ask for an IP and as long as nobody else has that fixed IP, it should work. But if there is another user on that number, both will get an error about duplication. If you then switch to the DHCP mode, the iPhone will ask the router for a suitable number, and it should issue one in the range it controls, if there is one not currently leased. As for the blocks in different locations, that should not matter. The iPhone doesn't know what the range is that the router controls, and really doesn't care. All it does is request an address and when it has one, uses it. And the fact that store 1 uses range X but store 2 uses range Y doesn't matter to the iPhone at all. All it "knows" is that it asked for an IP and got one. (or not) [/QUOTE]

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