[strongSwan] Error Message: "unsupported mode"?

[Tobias Brunner]

Hi Michael,

> What exactly does "IPsec SA: unsupported mode" mean? unsupported mode
> "transport"?

You are using the kernel-libipsec plugin, which implements IPsec in 
userland and requires tunnel mode.  You probably don't want to use that, 
see [1] for details.

Regards,
Tobias

[1] https://docs.strongswan.org/docs/5.9/plugins/kernel-libipsec.html