AT&T U-Verse Firmware Upgrade on Motorola Modem Removed Bridge Mode Option

Is there a workaround for re-enabling the bridge mode option that AT&T U-Verse has specifically removed from their latest firmware update on their Motorola modems?  This is a major issue as this disables the option to use additional third party equipment such as routers (specifically SonicWall) for using a Static IP and connecting to an office and using VOIP phones.

I have found tens of forum posts across the internet stating the same issue with no resolution but tens of pages of posts and no true alternatives.  Is downgrading the firmware even an option with these modems and AT&T U-Verse or will that cause issues with the connection or an agreement with AT&T's usage policy?  I specifically have asked AT&T why they have disabled this feature and if attempting to downgrade the firmware of the modem to the previous version which allowed this setup is against their terms of use and they were unable to answer stating that they removed the feature because most customers were not using it and that they didn't know about their terms of usage (this is reported by multiple calls and different agents in different departments).
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csandlinAsked:
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SouljaCommented:
I guess I don't completely understand. Is the modem now routing, so it has it own external and internal ip address? If so, could you use it as the next hop for your setup?
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Blue Street TechLast KnightCommented:
Hi csandlin,

You can used a Uverse *router* with SonicWALL all day long. You just have to understand that the router has a WAN and LAN side to it. Typically ATT will have your WAN IP and then use their Public LAN IPs as your Gateway & Useable IP Block (5 pack ,etc.) In this case you'd setup your SonicWALL WAN to the ATT Uverse router's LAN as statics provided they issue statics to you. Then you can router and setup your VLANs and phones through the SonicWALL and everything will work as you desire it to.

Let me know if you have any other questions!
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csandlinAuthor Commented:
Thanks for the responses.  The main issue here is AT&T U-Verse via a firmware update on their new gateways/modems have removed the ability to bridge a static IP configuration to SonicWalls leaving the device unusable.

Calling AT&T multiple times they've said that they removed the feature as less customers were using it and that they didn't have any other options for me.
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Blue Street TechLast KnightCommented:
What is the model number of the Uverse router/modem?

As I stated before this is very achievable if I'm thinking of the model widely distributed by them. If its simply a router (including a firewall, wifi, switch & modem) all in one you can achieve this, as I stated above, without bridging.

Let me know if you have any questions!
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csandlinAuthor Commented:
The AT&T will still act as a firewall in this scenario which adds administrative and troubleshooting burden to the equation.  This scenario also does not support site to site VPNs.
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Blue Street TechLast KnightCommented:
I'm not sure I am being clear here. You can use a ATT Uverse Router and a SonicWALL firewall without any add management. You simply disable the WiFi & firewall function within the router and add the ISP's LAN to your SonicWALL WAN Interface. VPN will work just fine - this is just routing traffic nothing more. We have many clients setup this way.
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csandlinAuthor Commented:
Resolved issue.
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Blue Street TechLast KnightCommented:
You said your router is made by Motorola...2-wire is not made by Motorola nor is the link help since each device has different features and you never specified which model your equipment is.
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