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wlanslovenija / tunneldigger

L2TPv3 VPN tunneling solution

Home Page:http://tunneldigger.readthedocs.org/

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Hotplug style waiting for an interface to go up.

pmelange opened this issue · comments

commented

I am using the tunneldigger client in openWrt (freifunk-berlin firmware). We expect situations where people install the firmware while meshing islands through a tunnel. It is therefore important that tunnels are not made over the mesh network and only though the wan interface. Thus we want to bind to the interface.

An issue arrises when router is not connected to a wan and only meshes. The wan is not connected to anything, yet tunneldigger tries to make a connection anyhow. There were 80 log entries in 10 seconds, which repeat five seconds later.

Mon Oct 22 01:04:52 2018 daemon.err td-client: Failed to bind to device!
Mon Oct 22 01:04:52 2018 daemon.err td-client: Failed to bind to device!
Mon Oct 22 01:04:52 2018 daemon.err td-client: Failed to bind to device!
Mon Oct 22 01:04:52 2018 daemon.err td-client: Failed to bind to device!
Mon Oct 22 01:04:52 2018 daemon.err td-client: Failed to bind to device!
Mon Oct 22 01:04:52 2018 daemon.err td-client: Failed to bind to device!
Mon Oct 22 01:04:52 2018 daemon.info td-client: Performing broker selection...
Mon Oct 22 01:04:53 2018 daemon.info td-client: Reinitializing tunnel context.
Mon Oct 22 01:04:53 2018 daemon.err td-client: Failed to bind to device!
Mon Oct 22 01:04:53 2018 daemon.err td-client: Unable to reinitialize the context!
Mon Oct 22 01:04:53 2018 daemon.info td-client: Reinitializing tunnel context.
Mon Oct 22 01:04:53 2018 daemon.err td-client: Failed to bind to device!
Mon Oct 22 01:04:53 2018 daemon.err td-client: Unable to reinitialize the context!
Mon Oct 22 01:04:53 2018 daemon.info td-client: Reinitializing tunnel context.
Mon Oct 22 01:04:53 2018 daemon.err td-client: Failed to bind to device!
Mon Oct 22 01:04:53 2018 daemon.err td-client: Unable to reinitialize the context!
Mon Oct 22 01:04:53 2018 daemon.info td-client: Reinitializing tunnel context.
Mon Oct 22 01:04:53 2018 daemon.err td-client: Failed to bind to device!
Mon Oct 22 01:04:53 2018 daemon.err td-client: Unable to reinitialize the context!
Mon Oct 22 01:04:53 2018 daemon.info td-client: Reinitializing tunnel context.
Mon Oct 22 01:04:53 2018 daemon.err td-client: Failed to bind to device!
Mon Oct 22 01:04:53 2018 daemon.err td-client: Unable to reinitialize the context!
Mon Oct 22 01:04:53 2018 daemon.info td-client: Reinitializing tunnel context.
Mon Oct 22 01:04:53 2018 daemon.err td-client: Failed to bind to device!
Mon Oct 22 01:04:53 2018 daemon.err td-client: Unable to reinitialize the context!
Mon Oct 22 01:04:56 2018 daemon.info td-client: Reinitializing tunnel context.
Mon Oct 22 01:04:56 2018 daemon.err td-client: Failed to bind to device!
Mon Oct 22 01:04:56 2018 daemon.err td-client: Unable to reinitialize the context!
Mon Oct 22 01:04:56 2018 daemon.info td-client: Reinitializing tunnel context.
Mon Oct 22 01:04:56 2018 daemon.err td-client: Failed to bind to device!
Mon Oct 22 01:04:56 2018 daemon.err td-client: Unable to reinitialize the context!
Mon Oct 22 01:04:56 2018 daemon.info td-client: Reinitializing tunnel context.
Mon Oct 22 01:04:56 2018 daemon.err td-client: Failed to bind to device!
Mon Oct 22 01:04:56 2018 daemon.err td-client: Unable to reinitialize the context!
Mon Oct 22 01:04:56 2018 daemon.info td-client: Reinitializing tunnel context.
Mon Oct 22 01:04:56 2018 daemon.err td-client: Failed to bind to device!
Mon Oct 22 01:04:56 2018 daemon.err td-client: Unable to reinitialize the context!
Mon Oct 22 01:04:56 2018 daemon.info td-client: Reinitializing tunnel context.
Mon Oct 22 01:04:56 2018 daemon.err td-client: Failed to bind to device!
Mon Oct 22 01:04:56 2018 daemon.err td-client: Unable to reinitialize the context!
Mon Oct 22 01:04:56 2018 daemon.info td-client: Reinitializing tunnel context.
Mon Oct 22 01:04:56 2018 daemon.err td-client: Failed to bind to device!
Mon Oct 22 01:04:56 2018 daemon.err td-client: Unable to reinitialize the context!
Mon Oct 22 01:04:58 2018 daemon.info td-client: Reinitializing tunnel context.
Mon Oct 22 01:04:58 2018 daemon.err td-client: Failed to bind to device!
Mon Oct 22 01:04:58 2018 daemon.err td-client: Unable to reinitialize the context!
Mon Oct 22 01:04:58 2018 daemon.info td-client: Reinitializing tunnel context.
Mon Oct 22 01:04:58 2018 daemon.err td-client: Failed to bind to device!
Mon Oct 22 01:04:58 2018 daemon.err td-client: Unable to reinitialize the context!
Mon Oct 22 01:04:58 2018 daemon.info td-client: Reinitializing tunnel context.
Mon Oct 22 01:04:58 2018 daemon.err td-client: Failed to bind to device!
Mon Oct 22 01:04:58 2018 daemon.err td-client: Unable to reinitialize the context!
Mon Oct 22 01:04:58 2018 daemon.info td-client: Reinitializing tunnel context.
Mon Oct 22 01:04:58 2018 daemon.err td-client: Failed to bind to device!
Mon Oct 22 01:04:58 2018 daemon.err td-client: Unable to reinitialize the context!
Mon Oct 22 01:04:58 2018 daemon.info td-client: Reinitializing tunnel context.
Mon Oct 22 01:04:58 2018 daemon.err td-client: Failed to bind to device!
Mon Oct 22 01:04:58 2018 daemon.err td-client: Unable to reinitialize the context!
Mon Oct 22 01:04:59 2018 daemon.info td-client: Reinitializing tunnel context.
Mon Oct 22 01:04:59 2018 daemon.err td-client: Failed to bind to device!
Mon Oct 22 01:04:59 2018 daemon.err td-client: Unable to reinitialize the context!
Mon Oct 22 01:05:01 2018 daemon.info td-client: Reinitializing tunnel context.
Mon Oct 22 01:05:01 2018 daemon.err td-client: Failed to bind to device!
Mon Oct 22 01:05:01 2018 daemon.err td-client: Unable to reinitialize the context!
Mon Oct 22 01:05:01 2018 daemon.info td-client: Reinitializing tunnel context.
Mon Oct 22 01:05:01 2018 daemon.err td-client: Failed to bind to device!
Mon Oct 22 01:05:01 2018 daemon.err td-client: Unable to reinitialize the context!
Mon Oct 22 01:05:01 2018 daemon.info td-client: Reinitializing tunnel context.
Mon Oct 22 01:05:01 2018 daemon.err td-client: Failed to bind to device!
Mon Oct 22 01:05:01 2018 daemon.err td-client: Unable to reinitialize the context!
Mon Oct 22 01:05:01 2018 daemon.info td-client: Reinitializing tunnel context.
Mon Oct 22 01:05:01 2018 daemon.err td-client: Failed to bind to device!
Mon Oct 22 01:05:01 2018 daemon.err td-client: Unable to reinitialize the context!
Mon Oct 22 01:05:01 2018 daemon.info td-client: Reinitializing tunnel context.
Mon Oct 22 01:05:01 2018 daemon.err td-client: Failed to bind to device!
Mon Oct 22 01:05:01 2018 daemon.err td-client: Unable to reinitialize the context!
Mon Oct 22 01:05:02 2018 daemon.info td-client: Reinitializing tunnel context.
Mon Oct 22 01:05:02 2018 daemon.err td-client: Failed to bind to device!
Mon Oct 22 01:05:02 2018 daemon.err td-client: Unable to reinitialize the context!
Mon Oct 22 01:05:02 2018 daemon.err td-client: No suitable brokers found. Retrying in 5 seconds

I see two possible solutions.

  1. Change l2tp_client.c at line 434 to wait for a timeout when the bind fails and try again. And without it being an error.
  2. Change the init to only start those which do not bind. Create a hotplug script to handle those which do bind.

I am willing to make the changes, but I want to know what the development group thinks before I go making changes.

commented

Sorry, there was a problem with github and it didn't show this issue when I posted it. Now it is a double post. I am closing this issue and leaving the other open

commented

Sorry, there was a problem with github and it didn't show this issue when I posted it. Now it is a double post. I am closing this issue and leaving the other open