[pptp-server] Criminal routing? - is pptp affected by split r outing?

[Jamin Collins]

G. Georgiev [mailto:ggeorgiev at videotron.ca] wrote:
>         Does someone have an idea why vpn.galileo.com replies to trace
> route only over the modem link? I may ping it over cable, but not
> traceroute or create the GRE tunnel needed for pptp to it. A normal
> TCP connection (pptp control connection) establishes over the cable,
> but the GRE tunnel fails to build. I did the traceroute with 
> GRE packets (thanks to Neale Banks for the patch), the result is same.

So, if you trace with GRE it makes it all the way to the destination over
the cable modem?  With GRE, does it make it to the last hop before the
destination (when compared to the trace without GRE)?


> Traceroute over cable - vpn.galileo.com can not be seen:
(snip)
> 15  187.ATM7-0.GW4.SLT4.ALTER.NET (152.63.91.245)  68.219 ms  
> 68.373 ms
> 16  galileo-gw1.customer.alter.net (157.130.169.202)  81.995 
> ms  105.072
> 17  * * *

> Traceroute over the modem - vpn.galileo.com is visible:
(snip)
> 13  187.ATM7-0.GW4.SLT4.ALTER.NET (152.63.91.245)  179.822 ms 
>  187.669 ms
> 14  galileo-gw1.customer.alter.net (157.130.169.202)  189.829 
> ms  197.647
> 15  * * *
> 16  vpn.galileo.com (12.17.202.16)  290.005 ms * *

The repeated timeouts (all of attempt 15 and 2 out of 3 on 16) seem a bit
concerning.

Jamin W. Collins