On 12/7/2011 12:49 PM, David Burgess wrote:
> On Wed, Dec 7, 2011 at 2:02 AM, Dave Warren <[email protected]> wrote:
>> On 12/7/2011 12:52 AM, Kelly Hays wrote:
>>>
>>> I wonder if the phone is doing the FQDN DNS lookup via the cell network
>>> even when connected to wifi?
> 
> nslookup is resolving from the local server, as does ping. Either way,
> with NAT loopback turned on, shouldn't it be able to register to the
> WAN address as well as the internal?
> 
> Some more testing has shown that the Android device will eventually
> register from inside or outside the network, however there is some
> delay after moving from outside to inside, even when manually trying
> to force it to re-register; it just times out while trying.

NAT reflection for UDP has never really worked correctly. Search the
archives and forum and ticket system. I'm not sure anyone has discovered
why, but the traffic hits the firewall and never comes back out, so it
does not reflect as expected.

The lack of working UDP NAT reflection would explain why it can't
register against the public address from inside.

Jim

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