PingTimeout

[Guus Sliepen]

On Wed, Jul 24, 2013 at 09:29:58PM +0200, Cédric Lemarchand wrote:

> I use tinc with QOS, and since some weeks I got problem with tunnel
> disconnection because the default "Pingtimeout" of 5 sec is reach.
> I think it happens because of the QOS shappe the tinc traffic (data
> here) to let some BP for VOIP, but whate is very strange is that the
> ICMP protocol is not include in the shapping, so tinc would never
> 'see' latency on the link, even if there is latency caused by the
> QOS.
> 
> So the question is does tinc really use ICMP to check remote hosts
> or use it's own UDP packets ?

Tinc uses its own UDP packets the check other hosts. This is done on purpose,
so that they don't get a special treatment compared to the regular UDP packets!

> A second one would be : does tinc check the remote host only when
> there is no traffic on the wire ? which, when I read the man, would
> tend to be yes ;-)

It always checks the remote host every PingInterval seconds.

-- 
Met vriendelijke groet / with kind regards,
     Guus Sliepen <guus at tinc-vpn.org>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 198 bytes
Desc: Digital signature
URL: <http://www.tinc-vpn.org/pipermail/tinc/attachments/20130724/0cc1b0e3/attachment.sig>