Re: problem getting client to connect via pptpd

>> I'd concentrate on GRE transport, and especially the bad checksum.
>> Google for 'GRE Bad checksum' for hints at what to look for.
As one reference, this page suggests that bad checksum is a "normal" error.
http://opensourcehacker.com/2011/10/23/set-up-pptp-virtual-private-network-vpn-server-on-ubuntu-linux/

Doesn;t seem normal but everything seems to work once I added pptp  
passthrough.

So is GRE bad checksum an issue or not?
I did some google searches but most have varying advice.

I can't seem to find bad checksum on this page...
http://pptpclient.sourceforge.net/howto-diagnosis.phtml




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