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?
Even if it's not doing such intentionally, it could happen if the user started the app while not on wifi and got a "bad" DNS record cached. We've had similar issues with laptops that roam in and out of our network.
I don't know how well implemented smartphone DNS caches are, but to work around this problem for laptops we've started using extremely short TTLs on any records that are different inside and outside the network. It's not perfect since some applications still cache IP addresses internally (and don't respect TTLs) but most well-written applications rely on the OS cache instead, so it works more than it doesn't.
-- Dave Warren, CEO Hire A Hit Consulting Services http://ca.linkedin.com/in/davejwarren _______________________________________________ List mailing list [email protected] http://lists.pfsense.org/mailman/listinfo/list
