Vitaly Burovoy <vitaly.burovoy@gmail.com> writes:
> P.S.: I still think it is a good idea to change storage format,
I'm not sure which part of "no" you didn't understand, but we're
not breaking on-disk compatibility of existing macaddr columns.
Breaking the on-the-wire binary I/O representation seems like a
nonstarter as well.
If you can think of a way to have one type do it all without breaking
that, then fine; but that seems like a pretty hard problem.
regards, tom lane