ng_pptpgre + netmask_change results to lock

Nikos Vassiliadis nvass at
Mon Jun 4 07:01:32 UTC 2007

On Friday 01 June 2007 14:14, Gleb Smirnoff wrote:
> On Wed, May 30, 2007 at 02:32:21PM +0300, Alexander Motin wrote:
> A>  Nikos Vassiliadis wrote:
> A> >> In my case doing a few times:
> A> >> ifconfig fxp0
> A> >> ifconfig fxp0
> A> >> locks the box.
> A>
> A>  Doing this you are dropping all routes going via that network.
> Probably you A>  are dropping route to your pptp peer which can lead to
> wrapping tunnel A>  inside himself.
> Yes. This is a known problem with netgraph tunnels.

I see. Would it be possible/desirable to control this kind
of situations using a LINK[012] flag? I mean having code/kludge
doing loop detection?


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