tunneldigger dies somtimes

[Sunz3r]

If internet lost connection (like reboot of router or plug off lan-cable) then the tunneldigger sometime dies.

After strace the tunneldigger i found that a assert is triggered: https://github.com/wlanslovenija/tunneldigger/blob/master/client/asyncns.c#L884

https://pastebin.com/R6CQmGXr

[neocturne]

The right place to report this is the Tunneldigger bug tracker at https://dev.wlan-si.net/report/15. I'll still keep this ticket open to track it for Gluon.

[mitar]

cc @kostko

[Sunz3r]

I was not able to report this bug on there site ...

this bug happens when dns-resolution failed and despite sending data through a socket:
td-client: Failed to send() control packet (errno=89, type=1)!
when dns-resolution suddenly works in this situation then the tunneldigger will crash.

I think there is a bug in the broker selection. The selector should wait for successful address-resolution.

To workaround this bug you can use ip's instead of names.

[Adorfer]

To workaround this bug you can use ip's instead of names.

thanks for the hint.
perhaps add a note in the site.conf example.doc in case of tunneldigger/l2tp use.

[mitar]

Interesting. We always use IPs, so this is why we didn't notice this before.

[ghost]

@mitar: How can i report bugs at https://dev.wlan-si.net/newticket?component=tunneldigger ? The registration link automatically moves me to the wlan-slovenia registration but the created account doesn't work on dev.wlan-si.net. And without an account, I will only see the message "TICKET_CREATE privileges are required to perform this operation"

Btw. the bug I see is with newer kernels (

Only one session (tunnel interface) can be created. All other sessions create a "Failed to setup tunnel with id 102!".

The test kernel is linux-image-4.9.0-4-amd64. And I saw some changes which might be related:

- l2tp: fix race in l2tp_recv_common()
- l2tp: ensure session can't get removed during pppol2tp_session_ioctl()
- l2tp: fix duplicate session creation
- l2tp: hold session while sending creation notifications
- l2tp: take a reference on sessions used in genetlink handlers

[kostko]

Report them in the GitHub repository.

[kostko]

BTW, there is already a fix for the session ID issue you mention. It is in wlanslovenija/tunneldigger#64 (not yet merged into master).

[rotanid]

we will close this issue here, as tunneldigger has recently been updated to the latest version.
you may continue to use this for discussion, but it should rather take place upstream.