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inet6: simplify NA DaD checking

This commit is contained in:
roy 2018-12-04 20:46:56 +00:00
parent 2097b57049
commit 7d7b3bbea7
1 changed files with 8 additions and 15 deletions
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17
sys/netinet6/nd6_nbr.c
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@ -1,4 +1,4 @@
/* $NetBSD: nd6_nbr.c,v 1.158 2018/12/04 12:23:43 roy Exp $ */
/* $NetBSD: nd6_nbr.c,v 1.159 2018/12/04 20:46:56 roy Exp $ */
/* $KAME: nd6_nbr.c,v 1.61 2001/02/10 16:06:14 jinmei Exp $ */
/*
@ -31,7 +31,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: nd6_nbr.c,v 1.158 2018/12/04 12:23:43 roy Exp $");
__KERNEL_RCSID(0, "$NetBSD: nd6_nbr.c,v 1.159 2018/12/04 20:46:56 roy Exp $");
#ifdef _KERNEL_OPT
#include "opt_inet.h"
@ -661,17 +661,10 @@ nd6_na_input(struct mbuf *m, int off, int icmp6len)
*
* Otherwise, process as defined in RFC 2461.
*/
if (ifa &&
(((struct in6_ifaddr *)ifa)->ia6_flags & IN6_IFF_TENTATIVE))
{
nd6_dad_na_input(ifa);
ifa_release(ifa, &psref_ia);
ifa = NULL;
goto freeit;
}
/* Just for safety, maybe unnecessary. */
if (ifa) {
if (((struct in6_ifaddr *)ifa)->ia6_flags & IN6_IFF_TENTATIVE)
nd6_dad_na_input(ifa);
else
log(LOG_ERR,
"nd6_na_input: duplicate IP6 address %s\n",
IN6_PRINT(ip6buf, &taddr6));