[riot-notifications] [RIOT-OS/RIOT] EUI48: Add address flag helper functions (#11666)

Koen Zandberg notifications at github.com
Mon Jun 10 20:48:11 CEST 2019

bergzand commented on this pull request.

> @@ -56,6 +56,24 @@ static inline void eui48_to_eui64(eui64_t *eui64, const eui48_t *addr)
     eui64->uint8[7] = addr->uint8[5];
+ * @name EUI-48 bit flags contained in the first octet
+ *
+ * @see IEEE 802-2001 section 9.2
+ * @{
+ */
+ * @brief Locally administered address.
+ */
+#define EUI48_LOCAL_ADMIN_FLAG  0x02

Quoting the IEEE 802 spec:
> The Individual/Group (I/G) address bit

> The Universally or Locally administered (U/L) address

I think I disagree with you here as the address itself is not local, but the address is locally administered (shortened to `LOCAL_ADMIN`) whereas with the other case the address is a group address. Although I don't mind shortening it to `EUI48_LOCAL_FLAG` if you insist.

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