Except there really is no vendor lock anymore. It is
possible to automate the entire renumbering process. If
there are spots where it is not automated then they should
be found and fixed.
It's not possible to automatically renumber firewall configurations in
different administration domains (quite deliberately so), and you
can't take your mail reputation with you (at least not completely).
Actually it is. You just are not willing to do it. It is
100% possible to do this automatically. It just requires
the chains of trust to be setup.
you seem to be thinking that this is a purely technical problem. it's not.
and there are valid reasons for keeping humans in the loop, and slowing
things down, when trust is involved.
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