5 Sep
2018
5 Sep
'18
8:17 p.m.
Hello Cathryn,
Your AMPR IP has valid DNS details so you should be receiving ampr-rip
broadcasts:
--
$ host 44.4.28.50
50.28.4.44.in-addr.arpa domain name pointer vhf.ke6i.ampr.org.
--
To test if your ISP is forwarding you the IPIP packets, you can try
doing this on a Unix host directly connected to your ISP provided device
(cablemodem, DSL modem, etc):
#Assuming eth0 is your uplink port
tcpdump -nni eth0 proto 4
While tcpdump is running, open up a web browser to
http://yo2tm.ampr.org/nettools.php
using your standard Internet connection and enter in your active AMPR IP
address (not
subnet) and click on "IPv4 ping". You should see something like the
following on the
tcpdump screen:
--
13:12:15.876817 IP 89.122.215.236 > 96.78.144.186: IP 44.182.21.1 >
44.4.10.40: ICMP echo request, id 37699, seq 1, length 64 (ipip-proto-4)
13:12:15.877272 IP 96.78.144.186 > 89.122.215.236: IP 44.4.10.40 >
44.182.21.1: ICMP echo reply, id 37699, seq 1, length 64 (ipip-proto-4)
13:12:16.876362 IP 89.122.215.236 > 96.78.144.186: IP 44.182.21.1 >
44.4.10.40: ICMP echo request, id 37699, seq 2, length 64 (ipip-proto-4)
13:12:16.876788 IP 96.78.144.186 > 89.122.215.236: IP 44.4.10.40 >
44.182.21.1: ICMP echo reply, id 37699, seq 2, length 64 (ipip-proto-4)
13:12:17.876889 IP 89.122.215.236 > 96.78.144.186: IP 44.182.21.1 >
44.4.10.40: ICMP echo request, id 37699, seq 3, length 64 (ipip-proto-4)
--
--David
KI6ZHD