I was curious if anyone else has seen this trouble, or may have a recommendation.
I have a TL-ER6020 V2 on the latest firmware. I was connecting via PPTP for a few months will no troubles.
For security sakes I moved to L2TP a few weeks ago. I began to notice the VPN drop once a day, every day.
I have other L2TP vpns that I can leave up the entire work day without trouble on the same machine, I'm not convinced it's a PC error.
For the last 3 work days, my VPN dropped at exactly 7 hours, 36 minutes, and 31 seconds of uptime (per the logs, baring any rounding errors).
Before I contact support to check on firmware bugs, I figured I'd check with the group.