Set the broadcast flag for interfaces that say they need it.

dhcpcd.c

@@ -765,6 +765,9 @@ configure_interface1(struct interface *iface)
 	uint8_t *duid;
 	size_t len = 0, ifl;
 
+	/* Do any platform specific configuration */
+	if_conf(iface);
+
 	if (iface->flags & IFF_POINTOPOINT && !(ifo->options & DHCPCD_INFORM))
 		ifo->options |= DHCPCD_STATIC;
 	if (iface->flags & IFF_NOARP ||

if-bsd.c

@@ -79,6 +79,13 @@ if_init(_unused struct interface *iface)
 	return 0;
 }
 
+int
+if_conf(_unused struct interface *iface)
+{
+	/* No extra checks needed on BSD */
+	return 0;
+}
+
 int
 init_sockets(void)
 {

if-linux.c

@@ -85,6 +85,26 @@ if_init(struct interface *iface)
 	return n == -1 ? -1 : 0;
 }
 
+int
+if_conf(struct interface *iface)
+{
+	char path[PATH_MAX], buf[1];
+	FILE *fp;
+
+	/* Some qeth setups require the use of the broadcast flag. */
+	snprintf(path, sizeof(path),
+	    "/sys/class/net/%s/device/layer2",
+	    iface->name);
+
+	fp = fopen(path, "r");
+	if (fp == NULL)
+		return errno == ENOENT ? 0 : -1;
+	if (fgets(buf, sizeof(buf), fp) != NULL && buf[0] == '0')
+		iface->state->options->options |= DHCPCD_BROADCAST;
+	fclose(fp);
+	return 0;
+}
+
 static int
 _open_link_socket(struct sockaddr_nl *nl)
 {

net.h

@@ -105,6 +105,7 @@ int inet_ntocidr(struct in_addr);
 int inet_cidrtoaddr(int, struct in_addr *);
 
 int up_interface(struct interface *);
+int if_conf(struct interface *);
 int if_init(struct interface *);
 
 int do_address(const char *,