shill: expand dbus constants for DHCPv6

This allows multiple DHCPv6 addresses/prefixes and preferred lease times to be
exposed over DBus from shill.  This information is necessary to correctly assign
IPv6 addresses in some cases.

TEST=shill unit test

Change-Id: I179dc5fd02699f07598e6c7603f45d5d9ebdde52
Commit-Ready: Timothy Jennison <>
Tested-by: Timothy Jennison <>
Reviewed-by: Paul Stewart <>
1 file changed