LAN contains two routers, one on subnet .55. (L for lab) and one on .88 (G for internet gateway). Cable between them is configured as subnet 10. Have set routes and networks as I understand things (config exports attached).
Can ping from host on L to host on G, but not in the reverse direction. Torch and Sniffer on L can see ICMP packets arrive from G via subnet 10. interface, but show nothing going from L to G there. However, firewall rule on L in the forward chain counts ICMP packets into the 10. interface linked to G. Traceroute from G to host on L seems to wander off onto the internet:
traceroute to 192.168.55.248 (192.168.55.248), 30 hops max, 60 byte packets
1 router.lan (192.168.88.1) 0.321 ms 0.376 ms 0.409 ms
2 * * *
3 * * *
4 * * *
5 * * *
6 * * *
7 * * *
8 * * *
9 * * *
10 * * *
etc. to 30 hops
I hope you can spot what I’m missing. Thanks in advance.