How to find out a VPN link has gone down (or better, come back up)?

[Bernard Higonnet]

Well it does seem to work and is the most straight-forward solution, 
though presumably the devd approach should work.

Thanks to both!
Bernard Higonnet


On 16/06/2013 16:40, Julian Elischer wrote:
> On 6/16/13 8:51 PM, Damien Fleuriot wrote:
>> I might be wrong but wouldn't that be a job for devd ?
>>
>> Alternatively set a cron job every minute to reinstall the route.
>
> use the up/down scripts to install the routes... that's what they are for.
>
>>
>>
>> On 16 Jun 2013, at 12:22, Bernard Higonnet <bthcom at higonnet.net> wrote:
>>
>>> I have a machine, FreeBSD 8.1-RELEASE #0, running a VPN (MPD5) server.
>>>
>>> Every once in a while, the link goes down, presumably because of some
>>> third-party event on the network.
>>>
>>> When this happens, an element placed in the routing table by hand
>>> disappears since the node on the VPN server to the far-off client
>>> machine no longer exists (even though the entry in the routing table
>>> is marked "permanent" when it does exist). When the network problem
>>> goes away, the VPN link is automatically restored, but not the
>>> routing table.
>>>
>>> Can someone tell me if there is a way to be notified that the link
>>> has been restored so that I can run a script etc. to restore the
>>> routing table to what I want?
>>>
>>> TIA
>>> Bernard Higonnet
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>
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