[strongSwan] Error Message: "unsupported mode"?

Tobias Brunner tobias at strongswan.org
Mon Oct 3 09:48:27 CEST 2022

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.


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

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