[vpn-help] Established VPN tunnel by Ubuntu client only transfers limited userland data

[Gordon]

Hi Matthew,

Sorry for the confusion.

I spotted that I'd been using the "Use existing adapter" address method
in the client's site configuration. 

I've now switched it over to the "Use virtual adapter" setting. Once the
tunnel is established with that setting and the default 1380 MTU, data
transfer appears to be fine. All of the existing problems I was
encountering have corrected.

Many thanks,
Gordon



On Tue, 2010-11-16 at 14:32 -0600, Matthew Grooms wrote:
> On 11/16/2010 2:25 PM, Gordon wrote:
> > Hi Matthew,
> >
> > Thanks for getting back to me on this.
> >
> > I've looked around for any MTU setting on the Netgear router, and can
> > only find one reference to this. The router has a default MTU size of
> > 1500 on the WAN interface.
> >
> > I was sort of expecting that there might be some MTU setting within the
> > VPN functionality of the router, but none is apparent.
> >
> > Anyway,I've tried reducing this WAN MTU downwards, as far as 1300, with
> > no apparent change in the Linux client behaviour.
> >
> > Is this enough info to move forward with?
> >
> 
> I meant the MTU on the tap device on your Ubuntu host. The tap device 
> gets created when the tunnel is established ( assuming you are using a 
> virtual adapter mode ). I'm not sure what you mean by the WAN MTU.
> 
> -MAtthew