Mark,

Great piece and glad you found resolution for the issue in our knowledge base (KB) library (http://www.sonicwall.com/us/support/2213.html) helpful.

The KB is probably one of our most accessed websites and an amazing resource.

On another note - you are right that ARP can be confusing.

There is a great background info on this issue and the feature you are referring to. It's an extra we added for customers using specific ISP hardware that behaves differently from others. This is something that we added as a courtesy to our customers who used to experience this issue with some ISP gear from Verizon (FIOS).

Please note that our product is a strict firewall and not another router.
Here is a thread in the Spiceworks community that references your issue:
http://community.spiceworks.com/topic/115863-fios-business

When you login here (http://sonicdts.eng.sonicwall.com/update_bug.asp?jobid=82297), you get access to the DTS we created to fix the issue with a workaround on our end for those affected customers, because we want to make sure our products work well for them.

You will see the comments from the developer about this not being a SonicWALL issue. The solution we provided in the KB article is simply aimed at resolving this issue for our customers with specific ISP appliances.

Please feel free to let me know if you would like to discuss further and we'll engage a Senior Support Engineer to reach out to you and take care of this.

Thanks again for the great piece!

Jock Breitwieser
Director Global Public Relations
Dell | SonicWALL
office +1 408 800 JOCK (5625)