Re: [44net] Connecting to 44net

Cathryn, I see your ping requests arriving at 169.228.34.84 no problem, and they are being encapsulated at sent to 50.79.209.150, again, no problem. Nothing is coming back from 50.79.209.150. This suggests that something is filtering out protocol 4 (IPIP) between 169.228.34.84 and 50.79.209.150. A traceroute from 169.228.34.84 to 50.79.209.150 using ordinary UDP works, completing after 18 hops. The last few hops in that path look like this: 14 162.151.87.226 12.097 ms 12.315 ms 12.088 ms 15 162.151.79.134 12.735 ms 12.744 ms 12.773 ms 16 68.87.227.122 13.080 ms 12.983 ms 12.920 ms 17 * * * 18 50.79.209.150 37.676 ms 42.664 ms 33.084 ms A traceroute from 169.228.34.84 to 50.79.209.150 using protocol 4 (IPIP) does not complete, and there are no responses beyond hop 15. The last few hops are: 12 68.86.84.150 11.117 ms 12.601 ms 12.734 ms 13 68.86.94.154 11.761 ms 11.743 ms 11.340 ms 14 162.151.87.226 12.469 ms 12.162 ms 12.392 ms 15 162.151.79.134 12.757 ms 12.800 ms 12.797 ms 16 * * * 17 * * * 18 * * * This suggests that hop 16, 68.87.227.122, is not accepting/passing protocol 4 packets. The hostname for that host is lag-2-240-acr07.pinole.ca.sfba.comcast.net. I hate to throw you to the wolves of comcast's customer service line, but you may need to find out from them if they suddenly started filtering out inbound IPIP packets at that router. - Brian On Sat, Jun 29, 2019 at 09:50:40AM -0700, Cathryn Mataga via 44Net wrote: > Date: Sat, 29 Jun 2019 09:50:40 -0700 > From: Cathryn Mataga &lt;cathryn(a)junglevision.com&gt; > To: AMPRNet working group &lt;44net(a)mailman.ampr.org&gt; > Subject: Connecting to 44net > > I'm not connected to 44net anymore, when I ping, to me at least, my > outgoing packets look correct, but I get no response ever. > > I'm trying to put together as much as I can. My gateway ips 44.4.28.50 > at 50.79.209.150, I have a static IP. > > I'm current on the portal, far as I can tell with no error messages. > > > ping 44.0.0.1 > PING 44.0.0.1 (44.0.0.1) 56(84) bytes of data. > *no response ever > > I see the outgoing, but never the ping back. > > tcpdump -vv -i enp4s0 host 169.228.34.84 > tcpdump: listening on enp4s0, link-type EN10MB (Ethernet), capture size > 262144 bytes > 09:39:25.982188 IP (tos 0x0, ttl 64, id 54479, offset 0, flags [DF], > proto IPIP (4), length 104) > hamradio.junglevision.com > amprgw.ucsd.edu: IP (tos 0x0, ttl 64, > id 14161, offset 0, flags [DF], proto ICMP (1), length 84) > ke6i.ampr.org > gw.ampr.org: ICMP echo request, id 25489, seq 105, > length 64 > 09:39:27.006173 IP (tos 0x0, ttl 64, id 54594, offset 0, flags [DF], > proto IPIP (4), length 104) > hamradio.junglevision.com > amprgw.ucsd.edu: IP (tos 0x0, ttl 64, > id 15137, offset 0, flags [DF], proto ICMP (1), length 84) > ke6i.ampr.org > gw.ampr.org: ICMP echo request, id 25489, seq 106, > length 64 > > I occasionally see one of these, which hints to me that ipip is making > it to my gateway. > > 09:39:15.386222 IP (tos 0x20, ttl 48, id 32657, offset 0, flags [none], > proto IPIP (4), length 60) > amprgw.ucsd.edu > hamradio.junglevision.com: IP (tos 0x0, ttl 237, > id 33644, offset 0, flags [none], proto TCP (6), length 40) > no-reverse-dns-configured.com.46324 > ke6i.ampr.org.finger: Flags > [S], cksum 0x039d (correct), seq 2046795537, win 1024, length 0 > > > ip tunnel list tunl0 > tunl0: any/ip remote any local any ttl 64 > > ifconfig tunl0 > > tunl0: flags=4289<UP,RUNNING,NOARP,MULTICAST> mtu 1480 > inet 44.4.28.50 netmask 255.255.255.255 > tunnel txqueuelen 1000 (IPIP Tunnel) > RX packets 2259 bytes 305270 (298.1 KiB) > RX errors 0 dropped 0 overruns 0 frame 0 > TX packets 2874 bytes 233904 (228.4 KiB) > TX errors 232 dropped 0 overruns 0 carrier 0 collisions 232 > > ifconfig enp4s0 > enp4s0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500 > inet 50.79.209.150 netmask 255.255.255.240 broadcast > 50.79.209.159 > ether 8c:89:a5:64:04:4c txqueuelen 1000 (Ethernet) > RX packets 140452 bytes 25244334 (24.0 MiB) > RX errors 0 dropped 473 overruns 0 frame 0 > TX packets 53461 bytes 5807456 (5.5 MiB) > TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0 > > ampr-ripd -d -t 44 -a 44.4.28.50/32 -s -L ke6i@cm87uu > Using gateway 50.79.209.158 for direct 44net endpoints via interface enp4s0. > Calling home > Waiting for RIPv2 broadcasts... > Simple password: *********** > > > ip rule list > > 0: from all lookup local > 44: from all to 44.0.0.0/8 lookup hamradio > 45: from all iif tunl0 lookup hamradio > 45: from 44.4.28.50 lookup hamradio > 32766: from all lookup main > 32767: from all lookup default > > > ip route list table hamradio > 44.0.0.1 via 169.228.34.84 dev tunl0 proto 44 onlink window 840 > 44.2.0.1 via 191.183.136.1 dev tunl0 proto 44 onlink window 840 > 44.2.2.0/24 via 216.218.207.198 dev tunl0 proto 44 onlink window 840 > ... > > I don't think it's a firewall issue, I've turned off firewall and it > doesn't fix anything. > > My route table looks healthy, so I think ampr-ripd is worrking correctly? > > Tried to include as much information as I can, thanks for any help!