3.x behaviour w.r.t. unused modules

[Phil Mayers]

I've just noticed something odd. If I have a module in mods-enabled but 
it's not referenced anywhere, FreeRADIUS still seems to load it and 
perform module instantiation including e.g. setting up connection pools.

I don't think 2.x used to do that, or am I imagining it?

For us that's undesirable as we use "radiusd -n" and start several 
processes up, and I don't really want to have multiple mods-enabled just 
to avoid instantiating e.g. SQL/redis/LDAP connections in server 
processes that don't reference the module.

I can work around it, but am wondering if this is expected?