Has there been any discussion about adding support for GRE tunnels? I realize that that this would not be a very heavily used feature, but in larger networks it is commonly used.
I might be willing to write a GRE page to add under the VPN menu if it woud be added (nothing pisses me off more than writing code for an OSS project and then having it ignored when they previously said they would use it).
In the short term, not having a ton of experience on pfSense, can I use rc.local functionality inside pfSense? Ie, have a GRE interface brought up that would work inside pfSense (meaning I could then add rules through the UI).