I've been curious how many of the 435 registered gateways were reachable, so I collected ICMP unreachable messages during a recent RIP transmission (which of course sends to every gateway) and got the following: 33 gateways aren't reachable or are rejecting inbound IPIP packets. So if any of the following gateways have been wondering why they weren't getting any AMPRNet traffic, this may be why. - Brian ICMP 24.247.95.42 protocol 4 unreachable ICMP 40.143.112.188 protocol 4 unreachable ICMP 54.146.4.133 protocol 4 unreachable ICMP 71.226.154.52 protocol 4 unreachable ICMP 73.227.91.174 protocol 4 unreachable ICMP 73.229.62.200 protocol 4 unreachable ICMP 75.145.123.237 protocol 4 unreachable ICMP 81.99.51.155 protocol 4 unreachable ICMP 96.82.54.108 protocol 4 unreachable ICMP 97.84.0.85 protocol 4 unreachable ICMP 104.236.122.16 protocol 4 unreachable ICMP 107.150.38.138 protocol 4 unreachable ICMP 107.172.42.138 protocol 4 unreachable ICMP 107.223.221.1 protocol 4 unreachable ICMP 158.69.169.207 protocol 4 unreachable ICMP 159.203.42.8 protocol 4 unreachable ICMP 162.157.83.249 protocol 4 unreachable ICMP 172.114.102.251 protocol 4 unreachable ICMP 172.90.97.192 protocol 4 unreachable ICMP 177.131.213.13 protocol 4 unreachable ICMP 185.10.249.21 protocol 4 unreachable ICMP 189.27.214.32 protocol 4 unreachable ICMP 195.187.71.116 protocol 4 unreachable ICMP 205.171.203.226 protocol 4 unreachable ICMP host 69.181.181.170 unreachable ICMP host 73.146.173.214 unreachable ICMP host 78.236.231.196 unreachable ICMP host 104.131.81.118 unreachable - admin prohibited ICMP host 104.5.53.79 unreachable ICMP host 179.190.230.27 unreachable ICMP host 188.230.236.122 unreachable ICMP host 201.227.57.207 unreachable ICMP host 216.161.250.188 unreachable ~