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ASA 5520 - "Duplicate first packet detected. Ignoring packet."

FranciscoRC
Beginner
Beginner

Hello Everyone,

 

To start let me thanking you for reading this post.

I have an ASA 5520 and, until yesterday everything was working perfectly, then "magically" I started getting this message, an all VPN Site-to-Site links can´t connect.

I have a public connection to my ISP 62.49.153.33/30 (VLAN20)

      - 62.49.153.34 (outside interface)

      - 62.49.153.35 (ISP Gateway) (Default route)

 

I requested an /29 for mail and other services and yesterday they sent(add)  62.49.170.177/29. Don´t ask me why or how, but I can use the full range . I successfully tried Static NAT´s for internal servers and I can successfully set a Static NAT for the servers .

I believe the problem arised when they added the second subnet (/29). I thought of adding one of the /29 IPs as the source for the ASA VPN Site-to-Site source address, but I can´t figure out how or if I should do it !?!?

If I change the outside IP, I can´t route anything...

Please help.. I don´t even know what to debug?

 

Thank you for your time

Francisco Conceição

 

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