That MTU is too short, methinks...

But try something closer to reality... say MTU=1480 ... play a bit with 
values between 1460 and 1500.

Gilles.

Brian Grayson wrote:
>   I recently tried out vpnc to see if I could use NetBSD instead of
> Windows or Linux to connect to work.  It all connects properly, but
> once I try to do anything serious (start vim in text mode, do a bunch
> of 'ls's, fire up vncviewer), the clients hang.  I can still fire up
> new clients, so it's not like the tunnel is busted, just that those
> particular streams are hosed.
>
>   As a check, I tried doing pings to work of various sizes.
> A ping of up to 500 bytes gets to work and back just fine, but a
> ping of 501 bytes or larger will not make it through.  Ordinarily, I
> can ping with packets larger than 1K to random spots throughout the
> world, so vpnc appears to be introducing something problematic....
>
>   My setup:  NetBSD desktop connected via Ethernet to NetBSD
> router box, connected to cable modem.
>
>   I'm clueless about mtu's etc., but on a whim I did:
>
> route change default 10.214.72.11 -mtu 400
>
>   And now route show <workmachine> shows:
>  mtu
>  400
>
>   But things still don't work.  Can someone send me a clue or two?  
>
>   TIA
>
>   Brian
>