Core issue
This issue can arise due to the presence of the ip verify unicast source reachable-via rx command in the router.
Resolution
As a workaround, ensure that the ip verify unicast source reachable-via rx command is not configured in the router.
For further information on this command, refer to these documents:
- Configuring Network Security
- The Access Control Lists and Logging section of Unicast_Reverse_Path_Forwarding_Enhancements
