tunnel failing due to ifconfig

[enpass4nt]

Hi there! I am unable to to establish a tunnel on either of my nodes. Ifconfig is failing and it looks like an issue with the subnet variable in tunnel.py. Both nodes are assigned "None.x.x" IPs. Getting the same result on both Ubuntu 18.04.5 LTS Python 3.6.9) and Raspbian GNU/Linux (Python 3.7.3).

Anyone have any suggestions on how to fix or workaround.

$ sudo .local/bin/meshtastic --tunnel Connected to radio INFO file:tunnel.py init line:83 Starting IP to mesh tunnel (you must be root for this pre-alpha feature to work). Mesh members: INFO file:tunnel.py init line:93 Node !25055d9c has IP address None.93.156 INFO file:tunnel.py init line:93 Node !25056dd8 has IP address None.109.216 None.93.156: Unknown host ifconfig: `--help' gives usage information. Aborting due to: ifconfig command failed.

System: Linux Platform: Linux-5.4.0-97-generic-i686-with-Ubuntu-18.04-bionic Release: 5.4.0-97-generic Machine: i686 Encoding (stdin): UTF-8 Encoding (stdout): UTF-8 meshtastic: v1.2.81 Executable: .local/bin/meshtastic Python: 3.6.9 CPython GCC 8.4.0`

[mkinney]

I have yet to try this.

Did you know about this file? https://github.com/meshtastic/Meshtastic-python/blob/master/extra/meshtastic_tun.rules

[enpass4nt]

Thank you. I did not know about that file. I added my user to netdev and added the rules file, but getting the same result.

I neglected to mention in the original post that I am getting an interface despite the aborted message: mesh0: flags=4305<UP,POINTOPOINT,RUNNING,NOARP,MULTICAST> mtu 1500 inet6 fe80::xxxx:xxxx:xxxx:xxxx prefixlen 64 scopeid 0x20 unspec 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00 txqueuelen 500

[mkinney]

Again, I've not tried this yet myself.

I'd start by looking at (or perhaps temp disabling) firewalls. I'd also start looking at the tunnels ("ip a") and perhaps enable --debug.

There was quite a good writeup on discourse over this feature, iirc. Might look for that info.

Please share whatever you find.

[enpass4nt]

After a week of trying countless permutations of hardware, operating systems and python versions, it turns out the solution was embarrassingly simple. It works when I explicitly set the subnet. derp. Thanks again for making this great project!

$ sudo ./meshtastic --subnet 10.115 --tunnel Connected to radio INFO file:tunnel.py init line:83 Starting IP to mesh tunnel (you must be root for this pre-alpha feature to work). Mesh members: INFO file:tunnel.py init line:93 Node !25055d9c has IP address 10.115.93.156 INFO file:tunnel.py init line:93 Node !25056dd8 has IP address 10.115.109.216

[mkinney]

Would you mind sharing more info about the setup that you got working?

[enpass4nt]

the same setup as detailed here: https://meshtastic.discourse.group/t/guide-ssh-over-meshtastic/2579

[Mr-Frank-Jaeger]

@enpass4nt i used ur fix and meshtastic seems to be working. However, when i try to ping or use MOSH to set up an ssh connection it just seems to hang or timeout. I used the same guide you posted but keep having the same issue. How did you get over it?

[r-tierney]

Good find @enpass4nt

I'm not too familiar with this codebase but at first glance I think it might be this line overriding the default subnet with a None value ( when the args.tunnel_net arg is not set ) https://github.com/meshtastic/python/blob/master/meshtastic/__main__.py#L774C18-L774C18

tunnel.Tunnel(interface, subnet=args.tunnel_net)

That None value i believe would get set here overriding the default subnet: https://github.com/meshtastic/python/blob/master/meshtastic/tunnel.py#L41

def __init__(self, iface, subnet="10.115", netmask="255.255.0.0"):

I believe the simple 1 liner fix here would be to first check if that arg is set before using it when instantiating that class

tunnel.Tunnel(interface, subnet=args.tunnel_net) if args.tunnel_net else tunnel.Tunnel(interface)

Opened a PR to get this fixed: https://github.com/meshtastic/python/pull/476

[r-tierney]

This has been fixed in release version 2.2.17 to use the tunnel feature simply update to this latest release

pip3 install --upgrade meshtastic