This article provides a possible workaround to solve the IPsec Plugin error "Internal Server Error 500"

If the user checks the status for 'show plugins state router <router_name> summary 128T-ipsec-client' it throws an error below after an upgrade from plugin version 3.0 to 4.0 :

===========================
500 Internal Server Error
===========================
Service got itself in trouble

As a workaround, please try to restart 128t-ipsec service as below:

systemctl restart 128t-ipsec

Note: This issue should be fixed in Plugin version 4.1.

Note: After IPSec Plugin upgrade, there is no need to restart the IPSec service, but if in case you encounter the above error, as a workaround, we can try to restart the service.

2025-01-29 : Article Created

2025-02-28: Added fixed version.

2025-11-09: minor edits and visibility changed