net: if: Setup DAD timer regardless of DAD query result (546386cd) · Commits · Wenxi XU / zephyr

In rare occasions when sending DAD NS packet fails, we should still setup the DAD timer, unless we implement some kind of more advanced retry mechanism. If we don't do that, the IPv6 address added to the interface will never be usable in such cases. Signed-off-by:

Robert Lubos <robert.lubos@nordicsemi.no> (cherry picked from commit )

subsys/net/ip/net_if.c

+6 −2

Changes for subsys/net/ip/net_if.c: 6 added lines, 2 removed lines.
Original line number	Diff line number	Diff line
		@@ -1295,7 +1295,12 @@ void net_if_ipv6_start_dad(struct net_if *iface,

		ifaddr->dad_count = 1U;

		if (!net_ipv6_start_dad(iface, ifaddr)) {
		if (net_ipv6_start_dad(iface, ifaddr) != 0) {
		NET_ERR("Interface %p failed to send DAD query for %s",
		iface,
		net_sprint_ipv6_addr(&ifaddr->address.in6_addr));
		}

		ifaddr->dad_start = k_uptime_get_32();
		ifaddr->ifindex = net_if_get_by_iface(iface);

		@@ -1310,7 +1315,6 @@ void net_if_ipv6_start_dad(struct net_if *iface,
		k_work_reschedule(&dad_timer,
		K_MSEC(DAD_TIMEOUT));
		}
		}
		} else {
		NET_DBG("Interface %p is down, starting DAD for %s later.",
		iface,

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