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Currently I have 1 firepower 2110 and I would like to know if it possible to configure site-to-site VPN using a domain name instead of an IP address. I couldn't find this info in any official cisco documentation.
Below is a picture of a failed ping to a dynamic DNS, followed by a successful ping to another dynamic DNS. My question is this: Can this be an ISP DNS problem? Often we get an "unable to resolve lj-0X-xx" alert in our systems.
