treewide: rework IPv4 address logic
authorHans Dedecker <dedeckeh@gmail.com>
Mon, 3 Jul 2017 14:39:21 +0000 (16:39 +0200)
committerHans Dedecker <dedeckeh@gmail.com>
Mon, 7 Aug 2017 13:27:20 +0000 (15:27 +0200)
Align IPv4 address logic with IPv6 by caching per interface the assigned
IPv4 addresses. This allows to get rid of different ioctl calls in the
DHCPv4 logic to retrieve the IPv4 address and netmask in use by an
interface.

Signed-off-by: Hans Dedecker <dedeckeh@gmail.com>

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