3 files changed, 33 insertions, 6 deletions

diff --git a/sys/netlink/route/iface.c b/sys/netlink/route/iface.c
index 8b871576d0b2..9beb80792af4 100644
--- a/sys/netlink/route/iface.c
+++ b/sys/netlink/route/iface.c
@@ -403,6 +403,7 @@ static const struct nlattr_parser nla_p_linfo[] = {
 NL_DECLARE_ATTR_PARSER(linfo_parser, nla_p_linfo);
 
 static const struct nlattr_parser nla_p_if[] = {
+	{ .type = IFLA_ADDRESS, .off = _OUT(ifla_address), .cb = nlattr_get_nla },
 	{ .type = IFLA_IFNAME, .off = _OUT(ifla_ifname), .cb = nlattr_get_string },
 	{ .type = IFLA_MTU, .off = _OUT(ifla_mtu), .cb = nlattr_get_uint32 },
 	{ .type = IFLA_LINK, .off = _OUT(ifla_link), .cb = nlattr_get_uint32 },
diff --git a/sys/netlink/route/iface_drivers.c b/sys/netlink/route/iface_drivers.c
index 5f605b05f7b8..4f1540740ead 100644
--- a/sys/netlink/route/iface_drivers.c
+++ b/sys/netlink/route/iface_drivers.c
@@ -93,7 +93,12 @@ _nl_modify_ifp_generic(struct ifnet *ifp, struct nl_parsed_link *lattrs,
 	if (lattrs->ifla_mtu > 0) {
 		if (nlp_has_priv(npt->nlp, PRIV_NET_SETIFMTU)) {
 			struct ifreq ifr = { .ifr_mtu = lattrs->ifla_mtu };
-			error = ifhwioctl(SIOCSIFMTU, ifp, (char *)&ifr, curthread);
+			error = ifhwioctl(SIOCSIFMTU, ifp, (char *)&ifr,
+			    curthread);
+			if (error != 0) {
+				nlmsg_report_err_msg(npt, "Failed to set mtu");
+				return (error);
+			}
 		} else {
 			nlmsg_report_err_msg(npt, "Not enough privileges to set mtu");
 			return (EPERM);
@@ -101,11 +106,31 @@ _nl_modify_ifp_generic(struct ifnet *ifp, struct nl_parsed_link *lattrs,
 	}
 
 	if ((lattrs->ifi_change & IFF_PROMISC) != 0 ||
-	    lattrs->ifi_change == 0) {
-		error = ifpromisc(ifp, lattrs->ifi_flags & IFF_PROMISC);
-		if (error != 0) {
-			nlmsg_report_err_msg(npt, "unable to set promisc");
-			return (error);
+	    lattrs->ifi_change == 0)
+		/*
+		 * When asking for IFF_PROMISC, set permanent flag instead
+		 * (IFF_PPROMISC) as we have no way of doing promiscuity
+		 * reference counting through ifpromisc().  Every call to this
+		 * function either sets or unsets IFF_PROMISC, and ifi_change
+		 * is usually set to 0xFFFFFFFF.
+		 */
+		if_setppromisc(ifp, (lattrs->ifi_flags & IFF_PROMISC) != 0);
+
+	if (lattrs->ifla_address != NULL) {
+		if (nlp_has_priv(npt->nlp, PRIV_NET_SETIFMAC)) {
+			error = if_setlladdr(ifp,
+			    NLA_DATA(lattrs->ifla_address),
+			    NLA_DATA_LEN(lattrs->ifla_address));
+			if (error != 0) {
+				nlmsg_report_err_msg(npt,
+				    "setting IFLA_ADDRESS failed with error code: %d",
+				    error);
+				return (error);
+			}
+		} else {
+			nlmsg_report_err_msg(npt,
+			    "Not enough privileges to set IFLA_ADDRESS");
+			return (EPERM);
 		}
 	}
 
diff --git a/sys/netlink/route/route_var.h b/sys/netlink/route/route_var.h
index b84b34461e35..41f110038b54 100644
--- a/sys/netlink/route/route_var.h
+++ b/sys/netlink/route/route_var.h
@@ -69,6 +69,7 @@ struct nl_parsed_link {
 	char		*ifla_cloner;
 	char		*ifla_ifalias;
 	struct nlattr	*ifla_idata;
+	struct nlattr	*ifla_address;
 	unsigned short	ifi_type;
 	int		ifi_index;
 	uint32_t	ifla_link;