problem wireguard + ospf + unconnected tunnels

Roelf "rewbycraft" Wichertjes mailings+wireguard at
Tue Jul 4 17:55:48 CEST 2017

 From what you said, I surmise the following setup:
- Three devices, A, B and C.
- A talks ospf to B over wireguard.
- A talks ospf to C over wireguard.
- The connection between A and C has gotten interrupted. (maybe C is a 
- The error causes the entire ospf process to fail for all interfaces.
   In other words: A will suddenly also stop talking B when the 
connection A<->C fails?

If I am correct in that, there are a few things to note:
  - The "No buffer space available" error is normal from wireguard when 
an interface cannot reach the peer.
  - A single "failing" interface shouldn't kill the ospf process for all 
  - This sounds more like a quagga problem, as I have a similar setup (I 
use my laptop for device C in my case) except I use the BIRD routing 
daemon instead of quagga (and this setup works fine for me).

Of course, before any definitive conclusions can be made, we'll need a 
bit more information. Could you possibly provide us with the following 
pieces of information:
  - What distribution are you using?
  - What kernel (version) are you using?
  - What wireguard version are you using?
  - What quagga version are you using?
  - Please provide the kernel logs.
  - Please provide the quagga logs.

On 07/03/2017 11:09 PM, 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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