The command to set the vpn interface is changed in the rolling release
which is not modified in many configuration examples, corrected syntax
in all pages where it is mentioned
A private key is also needed to finish the ipsec setup which is not mentioned
in the section "Source tunnel from loopbacks/Setting up IPSec". I have added
for reference.
RSA-Keys page was blank, so added the steps to generate and add the keys to
the VPN IPSec config.
Also corrected the IPSec/GRE page where authentication parameter was
missing before remote-id.