+static inline bool eth_addr_is_zero(const uint8_t ea[6])
+{
+ return !(ea[0] | ea[1] | ea[2] | ea[3] | ea[4] | ea[5]);
+}
+static inline bool eth_addr_equals(const uint8_t a[ETH_ADDR_LEN],
+ const uint8_t b[ETH_ADDR_LEN])
+{
+ return !memcmp(a, b, ETH_ADDR_LEN);
+}
+static inline uint64_t eth_addr_to_uint64(const uint8_t ea[ETH_ADDR_LEN])
+{
+ return (((uint64_t) ea[0] << 40)
+ | ((uint64_t) ea[1] << 32)
+ | ((uint64_t) ea[2] << 24)
+ | ((uint64_t) ea[3] << 16)
+ | ((uint64_t) ea[4] << 8)
+ | ea[5]);
+}
+static inline void eth_addr_from_uint64(uint64_t x, uint8_t ea[ETH_ADDR_LEN])
+{
+ ea[0] = x >> 40;
+ ea[1] = x >> 32;
+ ea[2] = x >> 24;
+ ea[3] = x >> 16;
+ ea[4] = x >> 8;
+ ea[5] = x;
+}
+static inline void eth_addr_random(uint8_t ea[ETH_ADDR_LEN])
+{
+ random_bytes(ea, ETH_ADDR_LEN);
+}
+
+#define ETH_ADDR_FMT \
+ "%02"PRIx8":%02"PRIx8":%02"PRIx8":%02"PRIx8":%02"PRIx8":%02"PRIx8
+#define ETH_ADDR_ARGS(ea) \
+ (ea)[0], (ea)[1], (ea)[2], (ea)[3], (ea)[4], (ea)[5]