net: ipv6: Do not keep linklocal and loopback addresses
f1705ec1 added the option to retain user configured addresses on an admin down. A comment to one of the later revisions suggested using the IFA_F_PERMANENT flag rather than adding a user_managed boolean to the ifaddr struct. A side effect of this change is that link local and loopback addresses are also retained which is not part of the objective of f1705ec1. Add check to drop those addresses. Fixes: f1705ec1 ("net: ipv6: Make address flushing on ifdown optional") Signed-off-by: NDavid Ahern <dsa@cumulusnetworks.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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