Re: [PATCH net-next] sysfs: add entry to indicate networkinterfaces with random MAC address

[David Miller]

From: Stephen Hemminger <shemminger@xxxxxxxxxx>
Date: Tue, 20 Jul 2010 14:18:16 -0700

> No one mentioned that the first octet of an Ethernet address already
> indicates "software generated" Ethernet address. Per the standard,
> if bit 1 is set it means address is locally assigned.
> 
> static inline bool is_locally_assigned_ether(const u8 *addr)
> {
> 	return (addr[0] & 0x2) != 0;
> }

W00t!

Indeed, can udev just use that?  :-)
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