I was just testing something and noticed an odd debug.
I have three routers testing something, all just plain vanilla configs, and adding a static route to a loopback address and I'm able to ping and traceroute to it, and I thought it was just fine...i happened to debug ip icmp and every 10 seconds I'm getting a destination port unreachable...I'm not sending any icmp, that i'm aware, that causes this message to pop on the console the moment i enter the route:
R3 192.168.2.1---------192.168.2.2 R2 192.168.13.2---------192.168.13.1 R1 Loop 1.1.1.1
R1 ip route 192.168.2.0 255.255.255.0 192.168.13.2
R2 ip route 1.1.1.1 255.255.255.255 192.168.13.1
R2 pings/traceroute 1.1.1.1 no issue, R3 cannot till the static is added
R3 ip route 1.1.1.1 255.255.255.255 192.168.2.2
Immediately this is logged to the console of R3:
dst 192.168.2.1 port unreachable from 192.168.13.1
And on the console of R1:
dst 1.1.1.1 port unreachable sent to 192.168.2.1
every 10 seconds.....
But 1.1.1.1 is pingable from R3. Probably would have gone unnoticed just by happenstance was running a deb ip icmp
Something dumb i'm not seeing right?
