26 Jan
2020
26 Jan
'20
10:31 p.m.
Bill and Marius,
root@OpenWrt:~# ping 44.131.170.1 -I 44.60.44.1
PING 44.131.170.1 (44.131.170.1) from 44.60.44.1: 56 data bytes
^C
--- 44.131.170.1 ping statistics ---
8 packets transmitted, 0 packets received, 100% packet loss
root@OpenWrt:~# tcpdump -vv -n -i eth0.2 proto 4 and host 90.155.50.1
tcpdump: listening on eth0.2, link-type EN10MB (Ethernet), capture size
262144 bytes
15:24:55.542645 IP (tos 0x0, ttl 64, id 5816, offset 0, flags [DF],
proto IPIP (4), length 104)
138.88.77.89 > 90.155.50.1: IP (tos 0x0, ttl 64, id 33597, offset
0, flags [DF], proto ICMP (1), length 84)
44.60.44.1 > 44.131.170.1: ICMP echo request, id 29441, seq 0,
length 64
15:24:56.542951 IP (tos 0x0, ttl 64, id 5893, offset 0, flags [DF],
proto IPIP (4), length 104)
138.88.77.89 > 90.155.50.1: IP (tos 0x0, ttl 64, id 33922, offset
0, flags [DF], proto ICMP (1), length 84)
44.60.44.1 > 44.131.170.1: ICMP echo request, id 29441, seq 1,
length 64
15:24:57.543362 IP (tos 0x0, ttl 64, id 6365, offset 0, flags [DF],
proto IPIP (4), length 104)
138.88.77.89 > 90.155.50.1: IP (tos 0x0, ttl 64, id 34371, offset
0, flags [DF], proto ICMP (1), length 84)
44.60.44.1 > 44.131.170.1: ICMP echo request, id 29441, seq 2,
length 64
15:24:58.543757 IP (tos 0x0, ttl 64, id 6964, offset 0, flags [DF],
proto IPIP (4), length 104)
138.88.77.89 > 90.155.50.1: IP (tos 0x0, ttl 64, id 34746, offset
0, flags [DF], proto ICMP (1), length 84)
44.60.44.1 > 44.131.170.1: ICMP echo request, id 29441, seq 3,
length 64
15:24:59.544129 IP (tos 0x0, ttl 64, id 7262, offset 0, flags [DF],
proto IPIP (4), length 104)
138.88.77.89 > 90.155.50.1: IP (tos 0x0, ttl 64, id 35223, offset
0, flags [DF], proto ICMP (1), length 84)
44.60.44.1 > 44.131.170.1: ICMP echo request, id 29441, seq 4,
length 64
15:25:00.544441 IP (tos 0x0, ttl 64, id 7662, offset 0, flags [DF],
proto IPIP (4), length 104)
138.88.77.89 > 90.155.50.1: IP (tos 0x0, ttl 64, id 36172, offset
0, flags [DF], proto ICMP (1), length 84)
44.60.44.1 > 44.131.170.1: ICMP echo request, id 29441, seq 5,
length 64
15:25:01.544762 IP (tos 0x0, ttl 64, id 8099, offset 0, flags [DF],
proto IPIP (4), length 104)
138.88.77.89 > 90.155.50.1: IP (tos 0x0, ttl 64, id 36590, offset
0, flags [DF], proto ICMP (1), length 84)
44.60.44.1 > 44.131.170.1: ICMP echo request, id 29441, seq 6,
length 64
15:25:02.545124 IP (tos 0x0, ttl 64, id 8706, offset 0, flags [DF],
proto IPIP (4), length 104)
138.88.77.89 > 90.155.50.1: IP (tos 0x0, ttl 64, id 36794, offset
0, flags [DF], proto ICMP (1), length 84)
44.60.44.1 > 44.131.170.1: ICMP echo request, id 29441, seq 7,
length 64
^C
8 packets captured
8 packets received by filter
0 packets dropped by kernel
root@OpenWrt:~# ipset test ipipfilter 90.155.50.1
Warning: 90.155.50.1 is in set ipipfilter.
root@OpenWrt:~# ip route get 44.131.170.1 from 44.60.44.1
44.131.170.1 from 44.60.44.1 via 90.155.50.1 dev tunl0 table 44 uid 0
cache expires 573sec mtu 1480 window 840
Nothing RX.
Also .254 is an AMPR-only IP you can ping (no DNS record).
-KB3VWG