I opened the ticket, received a request for the product serial number - which I did not have, being only an end user - and after that, never heard from them aga

I opened the ticket, received a request for the product serial number - which I did not have, being only an end user - and after that, never heard from them again. I have replied to their auto-emails, and to the chap who asked for the serial number. Nothing ever came back. The ticket is a red herring, I would say. I may be wrong, but given the need for the serial number, Barracuda have chosen block all but paying customers, regardless of the issue. This type of behaviour I think is common in larger companies. What it means for end users like you or me is the need to be warned by others about issues in the product. As an aside, I think I recall security issues in their products - ah, mmm, searching finds a ten year old article, which speaks of long-lasting intentional SSH backdoors in multiple Barracuda products. https://krebsonsecurity.com/2013/01/backdoors-found-in-barracuda-networks-gear/ https://krebsonsecurity.com/2013/01/backdoors-found-in-barra... Still, that was ten years ago - but OTOH, we have this astounding resolv.conf behaviour today.