K 10
svn:author
V 2
ae
K 8
svn:date
V 27
2018-01-29T10:33:55.879678Z
K 7
svn:log
V 572
Assign IPv6 link-local address to loopback interfaces whith unit > 0.

When an interface has IFF_LOOPBACK flag in6_ifattach() tries to assing
IPv6 loopback address to this interface. It uses in6ifa_ifpwithaddr()
to check, that interface doesn't already have given address and then
uses in6_ifattach_loopback(). If in6_ifattach_loopback() fails, it just
exits and thus skips assignment of IPv6 LLA.
Fix this using in6ifa_ifwithaddr() function. If IPv6 loopback address is
already assigned in the system, do not call in6_ifattach_loopback().

PR:		138678
MFC after:	3 weeks

END