DirectAdmin backup: Got packet bigger than 'max_allowed_packet'

I Googled it for you and found a similar issue on another site, also with increasing the packet size without solution.
Maybe it can be of help to you:

I had a similar error and would fail with packet size 512M on row 0. It was an iodb table that was apparently damaged (mysqlcheck showed OK). I ended up re-creating the table and then it worked fine with a small packet size of just 128M.

Where or how did you increase the size to 1G?