44net March 2019

44net@mailman.ampr.org

41 participants
33 discussions

Hamnet over 70cm : NPR (New Packet Radio)
by f4hdk 08 Jun '19

08 Jun '19

Hello, I am Guillaume, callsign F4HDK, a french amateur-radio operator, and a hacker-maker. I would like to share with you my last project : NPR (New Packet Radio). All documentation is provided here : https://hackaday.io/project/164092-npr-new-packet-radio This solution can transport bi directional IP trafic over 70cm radio links, in a 'point to multipoint' topology, at datarate up to 500kbps. This can be used to increase the range of existing HSMM-Hamnet networks, at lower datarates. It's designed for "access", not backbone, and not designed for H24 use. Its is 100% open-source. Do not hesitate to ask me questions about it. I hope it will interest some people here. 73, Guillaume F4HDK

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Router demo
by Marius Petrescu 16 Apr '19

16 Apr '19

Although I wanted to provide a freely accessible demo for ALL ham operators as an configuration example on an EdgeRouter, I'm starting to have my doubts. Especially to w6ray... What is the use of hanging on a router web interface for 24h now? What new information could it give you by watching its interface? Marius, YO2LOJ

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Linux Gateway Question.
by KJ7DMC 01 Apr '19

01 Apr '19

Hello, I'm setting up a gateway on a linux server, I have added NAT and firewall rules to send protocol 4 over to my server at 10.0.2.1. Here's some output from tcpdump. Does this look right to you? Under it I have the output from ampr-ripd, showing nothing coming in. 0.0.0.0.5678 > 255.255.255.255.5678: UDP, length 102 15:41:24.153222 IP (tos 0x50, ttl 242, id 15047, offset 0, flags [none], proto IPIP (4), length 174) ip72-192-148-49.sd.sd.cox.net > 10.0.2.1: IP (tos 0x0, ttl 64, id 0, offset 0, flags [none], proto UDP (17), length 154) 0.0.0.0.5678 > 255.255.255.255.5678: UDP, length 126 15:41:35.790028 IP (tos 0x50, ttl 232, id 5104, offset 0, flags [none], proto IPIP (4), length 166) dhcp-91-241-24-251.zc.net.pl > 10.0.2.1: IP (tos 0x0, ttl 64, id 0, offset 0, flags [none], proto UDP (17), length 146) 0.0.0.0.5678 > 255.255.255.255.5678: UDP, length 118 15:41:40.735505 IP (tos 0x50, ttl 233, id 5482, offset 0, flags [none], proto IPIP (4), length 150) 89-67-160-225.dynamic.chello.pl > 10.0.2.1: IP (tos 0x0, ttl 64, id 0, offset 0, flags [none], proto UDP (17), length 130) 0.0.0.0.5678 > 255.255.255.255.5678: UDP, length 102 15:42:24.169078 IP (tos 0x50, ttl 242, id 15303, offset 0, flags [none], proto IPIP (4), length 174) ip72-192-148-49.sd.sd.cox.net > 10.0.2.1: IP (tos 0x0, ttl 64, id 0, offset 0, flags [none], proto UDP (17), length 154) 0.0.0.0.5678 > 255.255.255.255.5678: UDP, length 126 15:42:35.827618 IP (tos 0x50, ttl 232, id 5105, offset 0, flags [none], proto IPIP (4), length 166) dhcp-91-241-24-251.zc.net.pl > 10.0.2.1: IP (tos 0x0, ttl 64, id 0, offset 0, flags [none], proto UDP (17), length 146) 0.0.0.0.5678 > 255.255.255.255.5678: UDP, length 118 root@rigel:~/ampr-ripd-2.4# ./ampr-ripd -d -i tunl0 Using gateway 10.0.0.1 for direct 44net endpoints via interface enp2s0. Waiting for RIPv2 broadcasts... Any help would be greatly appreciated. Thanks and 73, -Nate, KJ7DMC

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Brian Kantor could you contact me off-list please
by Ruben ON3RVH 29 Mar '19

29 Mar '19

Hi Brian, I am trying to reach you off-list but the message keeps bouncing at your bkantor.net o365 mailbox due to security settings. I have a question about re-routing my BGP subnet. Would it be possible to contact me off-list please? Thanks! 73, Ruben - ON3RVH

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Vultr & vyos bgp setup
by brian＠binded.net 24 Mar '19

24 Mar '19

Hello All! I just got my /24 setup over at vultr. Im trying to follow a generic VYOS guide to setup bgp. Im getting some errors when trying to setup the bgp network command. Im used to working with cisco stuff, never really configured anything else. Has anyone used VYOS for bgp? Or is there another router OS thats better to use. 73, Brian

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EdgeRouter Gateway question.
by KJ7DMC 23 Mar '19

23 Mar '19

Hello, I have set up my ubiquiti edgerouter according to this guide http://wiki.ampr.org/wiki/Setting_up_a_gateway_on_Ubiquiti_EdgeRouter. I have plugged a pc into the new port, and I have internet connectivity, but via my ISP ip address. Here is a traceroute to google, showing that it is hitting the gateway. My PC has a static ip of 44.26.0.170, a mask of 225.255.255.248 and a default gateway of 44.26.0.169. What am I doing wrong? Thanks, -Nate 1 <1 ms <1 ms <1 ms kj7dmc.ampr.org [44.26.0.169] 2 <1 ms <1 ms <1 ms 192.168.2.1 3 10 ms 9 ms 10 ms 96.120.60.77 4 10 ms 9 ms 8 ms ae-118-rur01.beaverton.or.bverton.comcast.net [162.151.125.65] 5 9 ms 10 ms 10 ms ae-51-ar01.beaverton.or.bverton.comcast.net [68.85.146.197] 6 29 ms 24 ms 26 ms be-33490-cr02.sunnyvale.ca.ibone.comcast.net [68.86.92.205] 7 25 ms 25 ms 26 ms be-11025-cr01.9greatoaks.ca.ibone.comcast.net [68.86.87.158] 8 24 ms 24 ms 25 ms be-12544-pe01.9greatoaks.ca.ibone.comcast.net [68.86.87.150] 9 25 ms 24 ms 24 ms fonality-cr01.losangeles.ca.ibone.comcast.net [75.149.228.74] 10 * * * Request timed out. 11 27 ms 26 ms 27 ms 108.170.237.22 12 25 ms 24 ms 24 ms 108.170.242.253 13 28 ms 25 ms 25 ms 216.239.62.41 14 32 ms 33 ms 32 ms 74.125.253.92 15 34 ms 32 ms 42 ms 72.14.239.31 16 33 ms 34 ms 33 ms 108.170.235.3 17 32 ms 32 ms 32 ms 108.170.245.97 18 32 ms 31 ms 31 ms 209.85.242.37 19 32 ms 31 ms 31 ms sea15s07-in-f14.1e100.net [216.58.193.78]

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AX25 support on Linux based (Raspberry PI) node
by Lorenzo Simoncello 22 Mar '19

22 Mar '19

Hi hoping won't be OT for "44 Net" mailing list, I would like to ask for yours experience with current AX25 support on Debian and specifically on Linux (Raspbian) based (Raspberry PI) node. At the moment my node should have 1 radio port (1 6pack interface to TNC) and one AXIP link via 44 net. In a previuos post I can see some warnings about "... many kernel issues with the AX25 stack and newer kernels that cause the kernel to simply lock, panic, and other nasties ..." and so the downgrade advice. On the other hand I can see AX25 kernel patch mailing list with some recent kernel little patches about AX25 ... someone know the real recent kernels conditions? It is absolutely necessary to downgrade from current stable 4.14.98 to previous 4.1.21 (for example ...)? In this case, is there a more recent "good" downgrade kernel? It is better to use "Jessie" instead of "Stretch" distro? Again about AX25 packages AX.25 Apps, AX.25 Tools, AX.25 Library: It is always the best choise to recompile and use VE7FET packages (thanks to Lee VE7FET for bugs fixed and reorganizing) instead of official repository (APT) ? It's a pity that there is no way to have a single good source ... Thanks for sharing your experience... may help to shorten the time to right configure a new node for more than someone ;) '73 de Lorenzo iw3her

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Re: [44net] BGP routes in RIP transmissions - Using ampr-ripd in parallel with BGP ?
by Rob Janssen 20 Mar '19

20 Mar '19

> This is another drawback : all outgoing traffic (to Internet) has to go > through one of our gateways, and can not be forwareded to Internet > directly by an endpoint via its local (NATted) ISP. Yes of course. In our case that is not very important because our gateway is in a datacenter in Amsterdam, where most of the internet traffic passes anyway, and the ping time to typical internet hosts nearby is like 2ms. I have a 5.5ms ping time to our gateway via my VDSL connection, and ~9ms via the radio links. That isn't an issue. In Germany it should not really be a problem to do it like this, they could have several datacenters across the country too. The trick is of course to find something that is inexpensive enough to pay it out of someone's pocket, as setting up a donation or contribution system is quite difficult, especially in the amateur radio community. (in Dutch a Ham is called "zendamateur" which is often written as "centamateur" in situations concerning financing community projects. it is funny that many amateurs have no problem paying like 2000-4000 euro for a transceiver, but won't consider paying 20 euro/year to sponsor a community project) Rob

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Re: [44net] AX25 support on Linux based (Raspberry PI) node
by Rob Janssen 19 Mar '19

19 Mar '19

> Since many on this group have the peculiar knowledge on AX.25, > on amateur packet radio and related stuff, it could be effective > and proficient to re-compact the efforts to support, repair, > improve and revamp the linux kernel, the NET/NOS and so on. The problem with code in the kernel is that it is very difficult to get any improvements available to the user. Assuming that not everyone wants to compile their own custom kernel from source, you need to get the improvements implemented in the standard kernel and then you have to wait until the distribution(s) of choice add this new fixed kernel into their distribution. Then you have to wait until this distribution is widely used by the users. This can easily take a year, maybe more! And when you discover problems or want to make additions the cycle starts again. Worse: when others make changes and break things, it takes a long time before this impacts users and then again a long time to fix it. So the approach really should be to take the stuff out of the kernel. Or maybe move it into an indepently developed loadable kernel module, maybe via dkms or so. Rob

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Re: [44net] BGP routes in RIP transmissions - Using ampr-ripd in parallel with BGP ?
by Rob Janssen 19 Mar '19

19 Mar '19

> - We are an island, so our network will be managed as a "closed" network, with only two gateways to "the rest of the world", in two data centers located in the two the main cities. It should be possible to get it working correct in that setup. The main problems of the German network are: - the use of many exitpoints towards internet that use consumer lines and NAT - the reliance on consumer routers that offer no flexibility in routing and connection marking (AVM Fritzbox etc) - the separation of different connection technologies in different routing tables evaluated sequentially instead of from smallest subnetsize up - (motivated by some of the above points) the naive routing that does not take connections into account, so it cannot differentiate between outgoing and incoming connections When you (and it looks like you do) abolish those internet connection points with NAT, most of the problems are already solved even in cases where the routing is asymmetrical and not optimal. At least it works. Rob

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44net March 2019