[PROJ] Am I supposed to get same results with libproj if passing proj4 +proj from/to crs ?

[Even Rouault]

> The question is should PROJ default to PROJ_NETWORK=ON if the
> PROJ_NETWORK configuration or environment variable is not defined? The
> current behaviour is that it defaults to OFF behavior.

When https://proj.org/community/rfc/rfc-4.html was discussed, a few 
people were against automatic network access, hence this default.

The default can also be changed by tuning proj.ini: 
https://proj.org/resource_files.html#proj-ini

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