netinet/if_ether.h: add ETH_P_DSA_8021Q from linux v5.2
ethertype for fake VLAN header for DSA, see
linux commit bf5bc3ce8a8f32a0d45b6820ede8f9fc3e9c23df
ether: Add dedicated Ethertype for pseudo-802.1Q DSA tagging
diff --git a/include/netinet/if_ether.h b/include/netinet/if_ether.h
index ecd6c73..8af47db 100644
--- a/include/netinet/if_ether.h
+++ b/include/netinet/if_ether.h
@@ -76,6 +76,7 @@
#define ETH_P_QINQ2 0x9200
#define ETH_P_QINQ3 0x9300
#define ETH_P_EDSA 0xDADA
+#define ETH_P_DSA_8021Q 0xDADB
#define ETH_P_IFE 0xED3E
#define ETH_P_AF_IUCV 0xFBFB