What you logged there are probably DHCP packets and private use of RIP, not the AMPR-RIP.

Well, I do see a lot of those things here either... Recently I again worked on the filters and found e.g.:

- router-sourced traffic with inner source address equal to the external IP (bad source address selection)

- router sending some of the traffic outside of the tunnel (net-44 to net-44 traffic unencapsulated) the funny thing is that e.g. when pinging them it returns via the tunnel but when doing BGP the SYN ACKs from port 179 come outside the tunnel. when the sender had proper source address filtering at their ISP I would not see those packets at all.

- of course still a lot of traffic with inner source address in RFC1918 range

The first two above are blamed on "MikroTik VRF". I never use it, I always use a manual implementation using multiple routing tables, ip routing rules and maybe some mangle rules just as I am used to do on bare Linux, and I don't have those problems. Another group swears by VRF and they always have issues. As I believe MikroTik VRF is just an an automatic configuration of the mentioned features and it apparently does not work completely OK (and may need some help e.g. some extra mangle rule). I tried to get information on what really happens when you define a VRF, but I was unable to get answers.

Rob