On 12 October 2016 at 14:30, Haribabu Kommi <kommi.harib...@gmail.com> wrote:

> As we are moving to PostgreSQL 10, so are there any plans of backward
> compatiblity
> breakage, so the existing macaddr datatype itself can be changed to support
> both
> 48 and 64 bit MAC addresses. If not, I will try update the POC patch with
> more details
> similar like macaddr datatype.

There's been some minor BC breaking, but breaking on-disk format for
pg_upgrade is a much bigger deal. I'm really not a fan of that idea.

Just use macaddr64 if you want wide MACs.

 Craig Ringer                   http://www.2ndQuadrant.com/
 PostgreSQL Development, 24x7 Support, Training & Services

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