[strongSwan] Regarding strongswan version 4.2.8

[Martin Willi]

> 1.      Does strongswan version 4.2.8 support CMPv2?

No, we don't support that in any release.

> 2.      Does this version also support multi-layered PKI architecture?
>         We are looking for 1 root CA and upto 3 sub-levels to be supported.

Probably yes.

> Which document should I refer to in order to find such information
> quickly?

4.2.8 is very old. If you are using IKEv1 only, that might work fine.
For IKEv2 I definitely recommend a newer version.

For pluto documentation refer to the files coming with the tarball: the
README file and the manpages.

Regards
Martin