Drop Packet - NAT Remap: Obtained invalid translated source from original offset

Unable to register the Firewall:

After you have logged on the firewall, in the section  System | Status on the right side of the page in Security Services once clicked on "update your registration" and you have entered the correct credentials should be displayed a blank page and / or it ask to register again.

Navigate to  System | Diagnostics | Check Network Settings click on "Server and then on Test All Selected":

The License Manager test should fail.

On CMD run the command “nslookup licensemanager.SonicWall.com”

If you are not able to resolve the IP address please refer:

UTM: How to use "DNS Name Lookup" diagnostic tool to resolve Name Servers (With video tutorial) (SW6008)

If you are able to resolve the IP address run a Packet Capture.

If the drop code is NAT Remap: Obtained invalid translated source from original offset follow the instruction below:

NOTE:  Based on the Firmware Version the Drop code can be different: Drop code 508,503,404,237...

Procedure:

- Check the NAT policies on Network | NAT

- Search if there is a an auto added NAT policy for the IPv6 stating source as all interface IP and translated source as all X1:V6 management

Please see below:

- Disable the NAT policy.
- Now you should be able to register the Appliance.