Today (Saturday) We will make some minor tuning adjustments to MySQL.
You may experience 2 up to 10 seconds "glitch time" when
we restart MySQL. We expect to make these adjustments around 1AM Eastern Daylight Saving Time (EDT) US.
Query Matched Man Text
IS_ZERO_ETHER_ADDR(9) Network device support IS_ZERO_ETHER_ADDR(9)
is_zero_ether_addr - Determine if give Ethernet address is all zeros.
int is_zero_ether_addr(const u8 * addr);
Pointer to a six-byte array containing the Ethernet address
Return true if the address is all zeroes.
Kernel Hackers Manual 2.6. July 2010 IS_ZERO_ETHER_ADDR(9)