tinc suddenly stops working on mac osx

[Remy]

On 24 janv. 2013, at 11:04, Guus Sliepen <guus at tinc-vpn.org> wrote:

> On Thu, Jan 24, 2013 at 12:08:58AM +0100, Remy wrote:
> 
>> I am having a working vpn with tinc in switch mode.
>> But today one node running tinc on OSX (10.8.2) has stopped working, but I have no clue why this happens.
>> I would appreciate any help on this issue.
> [...]
>> 2) tail -f /var/log/syslog | grep tap0
>> 
>> Jan 23 23:51:21 banafshe kernel[0]: tap0: attached with 1 suspended link-layer multicast membership(s)
>> Jan 23 23:51:21 banafshe kernel[0]: tap0: failed to restore 1 suspended link-layer multicast membership(s) (err=102)
>> Jan 23 23:51:21 banafshe kernel[0]: tuntap: Fixing address family for tap0
> 
> Hm, it looks like this is a bug in the tuntaposx driver, see:
> 
> http://sourceforge.net/p/tuntaposx/bugs/14/

I had a look at this bug. But this one is about a problem with the dhcp client in osx. In my case, I am using a static setup as shown below

>bash-3.2# cat tinc-up 
>#! /bin/sh
>ifconfig $INTERFACE 10.136.0.5 netmask 255.255.255.0

Based on the bug report, I have tried to reset the interface using ipconfig as follows:

>ipconfig set $INTERFACE none

After this tinc segfaulted a few times. But this morning, I could restart tinc wthout a problem.

Facit:
Problem solved, but cause not explained.

Regards
Remy


> 
> If you set the MAC address of the tap interface in the tinc-up script, make
> sure the interface is down before you do that, bring it up afterwards. The
> comments in the above bug report suggest restarting the DHCP client daemon
> (after starting tinc), or you could try the experimental tuntaposx driver:
> 
> http://sourceforge.net/p/tuntaposx/bugs/_discuss/thread/78f8f847/2665/attachment/tuntap_20120707-experimental.tar.gz
> 
> Perhaps it is best to try the experimental tuntap driver, if that works we
> should let Mattias Nissler know.
> 
> -- 
> Met vriendelijke groet / with kind regards,
>     Guus Sliepen <guus at tinc-vpn.org>
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