MFS r267876 (MFC r267616):
Retooling addrconfig() to exclude addresses on loopback interfaces
when looking for configured addresses.
This change is based upon the code from the submitter, and made
following changes:
- Exclude addresses assigned on interfaces which are down, like NetBSD
does.
- Exclude addresses assigned on interfaces which are ifdisabled.
PR: 190824
Submitted by: Justin McOmie
Approved by: re (marius)
git-svn-id: svn://svn.freebsd.org/base/releng/9.3@268106
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