[Swan] Error ”cannot install eroute” when rekey/reconnect from the same IP (for L2TP)

[Bob Miller]

> Hi Paul,

>> Yes it does. But you should really try to not start L2TP/IPsec
>> deployments anymore. That's really 1999.
>>
>> You should use IKev2 or IKEv1 XAUTH ("Cisco IPsec mode")
>>
>> The only client I know that does not support that without third party
>> clients is WinXP.

I am looking for documentation on how to setup xauth without a 3rd party 
client in windows 7/8, but everything I come across says still need the 
shrewsoft client.  Am I missing something?