---
 sysdeps/mach/hurd/net/if_ether.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/sysdeps/mach/hurd/net/if_ether.h b/sysdeps/mach/hurd/net/if_ether.h
index 88b8d03f35..7709012556 100644
--- a/sysdeps/mach/hurd/net/if_ether.h
+++ b/sysdeps/mach/hurd/net/if_ether.h
@@ -24,10 +24,12 @@
  */
 
 #define ETH_ALEN       6               /* Octets in one ethernet addr   */
+#define ETH_TLEN       2               /* Octets in ethernet type field */
 #define ETH_HLEN       14              /* Total octets in header.       */
 #define ETH_ZLEN       60              /* Min. octets in frame sans FCS */
 #define ETH_DATA_LEN   1500            /* Max. octets in payload        */
 #define ETH_FRAME_LEN  1514            /* Max. octets in frame sans FCS */
+#define ETH_FCS_LEN    4               /* Octets in the FCS             */
 
 /*
  *     These are the defined Ethernet Protocol ID's.
-- 
2.53.0


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