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-rw-r--r--ethertype.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/ethertype.h b/ethertype.h
index d22b9277..2d6bbebd 100644
--- a/ethertype.h
+++ b/ethertype.h
@@ -117,3 +117,6 @@
#ifndef ETHERTYPE_LOOPBACK
#define ETHERTYPE_LOOPBACK 0x9000
#endif
+#ifndef ETHERTYPE_8021QINQ
+#define ETHERTYPE_8021QINQ 0x9100
+#endif