Hi

I need to manually specify an IP address for the local ID of an IPSec VPN.
The only available field for specifying a local ID manually is the FQDN.

Is there a way to do this?

sis

You can use a script to resolve the name periodicaly and set the IP in the IPSEC upon change.

If what you need is to use IPSec with a dynamic IP (unclear from your post), look at this script on the wiki:
http://wiki.mikrotik.com/wiki/IPSec_Policy_Dynamic