[Bug 186841] rc.conf ifconfig syntax for binding ip-ranges broken [regression]

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=186841

--- Comment #6 from Bryan Drewery <bdrewery at FreeBSD.org> ---
(In reply to Hiroki Sato from comment #4)
> Sorry, I had missed this PR.  I am thinking that making _IPEXPANDMAX be
> user-configurable in rc.conf is better than removing it completely because
> the number of resulting addresses can be too large.  Do you have any
> specific reason that we should remove this restriction at all?

My reasoning is that it is a regression over how the _addrs mechanism has
always worked. It would make sense to limit the ranges by the size of the CIDR
mask, but a blanket limit is not right IMHO. If the user specifies X-N/MASK
they expect all IPS between X and N to be added, at least for the size of the
mask.

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