Hello,
I posted this topic at the replay of this original post.

Did anyone try any Linux client using StrongSwan for a VPN connection?
I checked most of the popular Linux distributors Ubuntu, Centos, Mint, Fedora. I got the same error as below. The connection is established, Obtained a local IP, Received a pushed DNS from the mod-config. Can not set the DNS as a loopback interface.
I did some research about this and its looks like some change in the Linux DNS system. Its looks like there is a miss config. With the original StrongSwan server you can fix this with the corrected way to push the config. But there is no Charon-nm in Mikrotik.
any idea how can I fix this issue?

Resource
https://fedoraproject.org/wiki/Changes/systemd-resolved

up.

That's a client side thing you need to sort out.
https://lists.strongswan.org/pipermail/ ... 13264.html
https://wiki.strongswan.org/projects/st ... olveplugin
"up!"

That's a client side thing you need to sort out.
https://lists.strongswan.org/pipermail/ ... 13264.html
https://wiki.strongswan.org/projects/st ... olveplugin
"up!"

Thanks for the replay. as I saw the StrongSwan in the directory name, I was thinking the directory is for the StrongSwan server never acquire to me that this may have been a StrongSwan client. Thank you for pointing this out.
"down"