Note that the prior issue was fixed in OpenBSD-5.9

1 files changed, 7 insertions, 2 deletions

diff --git a/if-bsd.c b/if-bsd.c
index 3a91a49d..bc473461 100644
--- a/if-bsd.c
+++ b/if-bsd.c
@@ -941,6 +941,8 @@ if_address6(unsigned char cmd, const struct ipv6_addr *ia)
 	ipv6_mask(&mask, ia->prefix_len);
 	ADDADDR(&ifa.ifra_prefixmask, &mask);
 
+#undef ADDADDR
+
 	/*
 	 * Every BSD kernel wants to add the prefix of the address to it's
 	 * list of RA received prefixes.
@@ -955,7 +957,7 @@ if_address6(unsigned char cmd, const struct ipv6_addr *ia)
 	 * constantly removing the prefix route dhcpcd is capable of adding
 	 * in it's absense.
 	 *
-	 * What we can do to mitigate the issue is to add the adress with
+	 * What we can do to mitigate the issue is to add the address with
 	 * infinite lifetimes, so the prefix route will never time out.
 	 * Once done, we can then set lifetimes on the address and all is good.
 	 * The downside of this approach is that we need to manually remove
@@ -964,16 +966,19 @@ if_address6(unsigned char cmd, const struct ipv6_addr *ia)
 	 *
 	 * This issue is discussed on the NetBSD mailing lists here:
 	 * http://mail-index.netbsd.org/tech-net/2016/08/05/msg006044.html
+	 *
+	 * Fixed in OpenBSD-5.9
 	 */
+#if !(defined(OpenBSD) && OpenBSD >= 201605)
 	if (cmd == RTM_NEWADDR && !(ia->flags & IPV6_AF_ADDED)) {
 		ifa.ifra_lifetime.ia6t_vltime = ND6_INFINITE_LIFETIME;
 		ifa.ifra_lifetime.ia6t_pltime = ND6_INFINITE_LIFETIME;
 		(void)ioctl(priv->pf_inet6_fd, SIOCAIFADDR_IN6, &ifa);
 	}
+#endif
 
 	ifa.ifra_lifetime.ia6t_vltime = ia->prefix_vltime;
 	ifa.ifra_lifetime.ia6t_pltime = ia->prefix_pltime;
-#undef ADDADDR
 
 	return ioctl(priv->pf_inet6_fd,
 	    cmd == RTM_DELADDR ? SIOCDIFADDR_IN6 : SIOCAIFADDR_IN6, &ifa);