NB> Maybe not, but I know what I was saying. My current router has an incoming NB> ethernet port and 4 outgoing ethernet ports. The RasPi only has one NB> ethernet port.
My main firewall/router/server has one Gigabit Ethernet port. That port is connected to a switch that supports VPN's and VPN trunking. Als Linux supports VPN and trunking, I use a trunk between the Server and teh Switch, the switch is trunked to a second smart switch.
The second smart switch is located at a position that is convinient for a cable modem and a adsl router. The cable modem and the adsl router both have their on VPM to the main firewall/router/server. A number of ports on both switches serve as endpoint for a third VPN that serves the LAN.
So the single NIC on the server serves 3 networks, WAN1, WAN2 and LAN.
At times the server/router functions as secondary router for IPv6. Up to four subnets can be requested from the ADSL router, one is assigned to the LAN.
Apparently I did not transfer all the magic, that is needed for the IPv6 subnet to the starup scripts. I recently had to shut the system down after an uptime of some 2 years, the IPv6 subnet did nor resurface. I will look into that again when time comes.
I have used a Pi as a router in my motorhome. A power-Wifi or a 3g-dongle provide a Wan connection. A small usb Wifi then provides the in-vehicle Wifi. Of course the Lan port is also available. This setup can cope with the slow speeds of the wan connections. I intend to use a Pi3 next year, then the internal Wifi can give the in-vehicle lan.
Kees
--- GoldED+/LNX 1.1.5 * Origin: As for me, all I know is that, I know nothing. (2:280/5003.4)
