pkg REINSTALL package

[Dmitry Sivachenko]

Hello!

I just installed ports-mgmt/pkg (version 1.3.4).

Then I run "pkg upgrade":
/usr/ports/packages/All# pkg upgrade
Updating repository catalogue
Fetching meta.txz: 100% of 260 B                                              
Fetching digests.txz: 100% of 11 KB                                           
Fetching packagesite.txz: 100% of 68 KB                                       

Adding new entries: 100%
Incremental update completed, 232 packages processed:
5 packages updated, 0 removed and 6 added.
Updating database digests format: 100%
New version of pkg detected; it needs to be installed first.
The following 1 packages will be affected (of 138 checked):

Installed packages to be REINSTALLED:
        pkg-1.3.4 (needed shared library changed)

The process will require 66 B more space
2 MB to be downloaded

Proceed with this action [y/N]: ^C

Why does it offer to reinstall it again?

Thanks.