- Deprecate IN6_IFF_NODAD. It was used to prevent DAD on a loopback

  interface but in6if_do_dad() already had a check for IFF_LOOPBACK.

- Remove in6if_do_dad() check in in6_broadcast_ifa().  An address
  which needs DAD always has IN6_IFF_TENTATIVE there.

- in6if_do_dad() now returns EAGAIN when the interface is not ready
  since DAD callout handler ignores such an interface.

- In DAD callout handler, mark an address as IN6_IFF_TENTATIVE
  when the interface has ND6_IFF_IFDISABLED.  And Do IFF_UP and
  IFF_DRV_RUNNING check consistently when DAD is required.

- draft-ietf-6man-enhanced-dad is now published as RFC 7527.

- Fix some typos.

1 files changed, 0 insertions, 3 deletions

diff --git a/sys/netinet6/in6_ifattach.c b/sys/netinet6/in6_ifattach.c
index d8a32d5..37bd720 100644
--- a/sys/netinet6/in6_ifattach.c
+++ b/sys/netinet6/in6_ifattach.c
@@ -566,9 +566,6 @@ in6_ifattach_loopback(struct ifnet *ifp)
 	ifra.ifra_lifetime.ia6t_vltime = ND6_INFINITE_LIFETIME;
 	ifra.ifra_lifetime.ia6t_pltime = ND6_INFINITE_LIFETIME;
 
-	/* we don't need to perform DAD on loopback interfaces. */
-	ifra.ifra_flags |= IN6_IFF_NODAD;
-
 	/* skip registration to the prefix list. XXX should be temporary. */
 	ifra.ifra_flags |= IN6_IFF_NOPFX;