On Wed, Jan 11, 2017 at 10:49:26PM +0100, Will van Gulik wrote:
> Hi Baptiste,
> 
> > On 11 Jan 2017, at 10:58, Baptiste Jonglez <[email protected]> 
> > wrote:
> > 
> > Hi Will,
> > 
> > 
> > There have been backwards-incompatible changes recently: can you make sure
> > that you use the exact same wireguard version on all peers?
> 
> I was using the same version (Debian package 0.0.20161230-1 from
> Unstable). However my bug occured between the package version and the
> compiled version from 0.0.20170105 . So I'll retry with both same kernel
> modules. Because at least for that try, I have a mismatch. But for my
> previous experiments all the version were the same.

Ok then, I don't know what the issue might be.

> Additional question, is it better to use one interface with a big subnet
> and multiple remote peers or an interface by peer with a /30 or a /31 ?

It depends on your use-case.  As far as I remember, you were using OSPF on
top of Wireguard, weren't you?  In that case, you are forced to use one
interface per peer (with AllowedIPs = ::/0 on each interface).

Baptiste

> >> Any clue, ideas, else ?
> >> 
> >> Cheers,
> >> 
> >> Will
> >> 
> >>> On 03 Jan 2017, at 09:52, Will van Gulik <[email protected]> wrote:
> >>> 
> >>> Hi,
> >>> 
> >>> I'm trying to use multiple wireguard tunnel in one VM at the same time, 
> >>> but it seems that only the first two I configured are working. I'm 
> >>> currently trying with 5 interfaces, I see the incoming packet in tcpdump 
> >>> but no reaction of the destination host with all the wg interfaces.
> >>> 
> >>> I'm not sure there is a limitation on that, I could totally have missed 
> >>> that. Should I use 1 interface with multiple peers rather than multiple 
> >>> interface ?
> >>> 
> >>> I'm testing that on a Debian with 4.8.7-1, running on a KVM host.
> >>> 
> >>> Any insight ?
> >>> 
> >>> Kind regards,
> >>> 
> >>> Will
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> >> 
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