I have several customers connected to my WAN, and I use NAT on their source address to make it easier to define my firewall rules and track traffic. I created a loopback interface to use as the NAT source. An example is:
ip address 10.228.28.25 255.255.255.248
ip nat inside source static 172.17.1.2 interface Loopback10
Now, this NAT setup works for the production traffic, but I have noticed that I can't ping the address for loop10 - even locally on the router! I found this out while doing an extended ping using the loop10 interface as the source. It did not work, and I found that odd behavior mentioned above.
Is this a result of using the loopback interface in this fashion? Has anyone seen this?
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