I can personally see there being use in both the getting sendto errors but also in simply dropping the packets (depending on the software you have communicating over wireguard). So rather than change it entirely, I would suggest making that an option of some sort.

As an aside, a single interface producing sendto() failures shouldn't, in my opinion, cause quagga's ospfd to refuse to operate on other interfaces.

On 07/08/2017 04:21 PM, Baptiste Jonglez wrote:
Hi,

The current approach is to queue all outgoing packets for an indefinite
amount of time when the peer is not connected or reachable.

I think it does not make much sense, and leads to the kind of issue you
mention here.  The initial goal was probably to queue packets just long
enough to be able to complete a handshake with the peer, which makes a lot
of sense (it would be annoying to drop the first packet of any outgoing
connection).  But the handshake should not take more than hundreds of
milliseconds.

Maybe Wireguard should drop packets from this queue after a few seconds?
Would it be hard to implement?

Baptiste

On Tue, Jul 04, 2017 at 12:09:22AM +0300, ae wrote:
situation
2 tunnels
1 normal - 2nd with unconnected ending
+ ospfd quagge

At start everything works fine - but after ~ 30-60 seconds - the ospf stops 
working

This is due to the fact that the ospf daemon sends packets from the same socket 
on different interfaces - and in the tunnel interface everything goes fine - 
but in the 2nd packets accumulate
And after a certain accumulation - the socket of the demon daemon stops working on 
sending completely "No buffer space available "

Is it possible to fix this with settings?


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