Many thanks for all the suggestions, folks. I think I will have a play around with egre(4) and etherip(4) paired with iked(8) first and then move on to OpenVPN if all else fails. I will try to simulate the network layout with vmm(4) and hopefully report back in a few days.
On Wed, 1 Apr 2020, at 18:47, Tom Smyth wrote: > Gre is great and fast and a hell of a lot faster than OpenVPN... > However and it is a Big However... > Gre does not typically work Across NATs On my side of the link I have an APU2 with OpenBSD working as a gateway and, potentially, managing this tunnelling too. As I have not got into details yet, would the NAT issue be avoided if one side of the tunnel has a public IP? -- Chris Rawnsley

