Tom B - Thank you again - My 3rd Hub is now also working (with my Uverse Firewall set the way I want it - OFF - in what AT&T calls "DMZplus mode").Tom B wrote:Made the same change to your 3rd hub. Appears your ISP is not liking udp-type vpn tunnels. Customers in China have the same problem.
If any other Uverse users in the Southeast USA are "tuned in" here and having weird network problems - you are not alone! - AT&T's Uverse network has been screwed up for the last couple days due to a botched upgrade and their forums are abuzz with angry folks with various problems.
I'm no expert in IP protocols, but the MTU being knocked down to 576 seems to be one of the things playing havoc with VPNs. Here's one simple post about it -
http://forums.att.com/t5/U-verse-Commun ... -p/3412471
I'm not sure if that's why a UDP-type tunnel now won't work to my two Hubs, but whatever else may be causing it, happened at the same time as the MTU drop.