My router behind the U-Verse 2Wire Router

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So I’ve been using U-Verse internet service for almost a month. I experienced occasional dropped connections and could not find the source. As usual, AT&T’s technical support has been completely useless.

I was able to watch Netflix on-demand and download large files without issues for the next 2 weeks after the installation, but then again dropped connections started to reoccur to the point that it was really annoying.

Yesterday I got a chance to switch my main Linksys WRT-54G which is running the latest DD-WRT firmware release. I installed a Netgear WNR834B v2 also running the latest DD-WRT firmware release.

The symptoms of dropped connections reoccurred, unfortunately. I decided to research further and found an interesting article about the DHCP lease time for routers behind the 2Wire router provided by AT&T. By the way, my router was assigned the WAN IP as it was in the DMZ+.

I went ahead and added the following configuration to the firewall:

iptables -I INPUT -p udp --sport 67 --dport 68 -j ACCEPT

I then rebooted both routers and voilà. Things are now back to normal.

GIYF!

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