[strongSwan] DPD [lack of] interoperability between strongswan and Cisco IOS

Olivier PELERIN olivier_pelerin at hotmail.com
Wed May 29 21:15:15 CEST 2013

Hello guys,

While playing [ikev1] with Strongswan and Cisco IOS, I've seen the following wierd behavior:

Strongswan Sends his Vendor ID in Main Mode 1 - IOS sends his vendor ID in Main Mode 4 but Strongswan does not seems to recognize it. 

I had a look at RFC 3706 / 2407 / 2408 and I dont see requirements to reply to this vendor ID in MM2.  

Is there a way of sending this DPD vendor ID in MM3?


Olivier pelerin

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