I had the Arris TG3482G installed Saturday (7/8/17). The install tech said that the modem could not be bridged. I searched around the net and found this thread.
I contacted Comcast via chat and the operator happily put my modem into bridge mode. I lost connection to the internet. Looking in my router it was not getting a public IP. I restarted it and tried everything I could to no avail. I called tech support and ended up with a very helpful guy named Mark in North Carolina. He tried to get it working and ended up resetting it three times. He updated the firmware, but it would not bridge. Although after the update the bridge button showed up in the web UI of the modem.
He recommended I just go trade it for the modem only device since I do not need wifi and routing that the gateway provides.
I will be trading it in tomorrow and see how that works.
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