Make sure PMTU discovery works in switch mode with VLAN tags.

[tinc] / lib / ethernet.h

diff --git a/lib/ethernet.h b/lib/ethernet.h
index 1cde140..8bf2b03 100644 (file)
--- a/lib/ethernet.h
+++ b/lib/ethernet.h
@@ -13,9 +13,9 @@
     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
     GNU General Public License for more details.
 
-    You should have received a copy of the GNU General Public License
-    along with this program; if not, write to the Free Software
-    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+    You should have received a copy of the GNU General Public License along
+    with this program; if not, write to the Free Software Foundation, Inc.,
+    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */
 
 #ifndef __TINC_ETHERNET_H__
@@ -41,6 +41,10 @@
 #define ETH_P_IPV6 0x86DD
 #endif
 
+#ifndef ETH_P_8021Q
+#define ETH_P_8021Q 0x8100
+#endif
+
 #ifndef HAVE_STRUCT_ETHER_HEADER
 struct ether_header {
        uint8_t ether_dhost[ETH_ALEN];