Wow, I think this may have worked. Though I’m not sure why.
At startup, I could clearly see two OpenVPN processes sort of ‘leap frogging’ eachother. With the switch off, there is only one.
And the connection also appears much more stable after startup. Clients appear to keep and hold a VPN connection and it looks like all the DHCPINFORM DHCPACK traffic has subsided.
What about the switch could have led to all of that instability? The physical switch is one of the reasons we went with these units, as the ability for edge users to disable the VPN for certain applications is important. Is there a way to reintroduce the switch functionality without compromising VPN stability?
Thanks for your help!