lkml.org 
[lkml]   [2010]   [Jul]   [21]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH net-next] sysfs: add entry to indicate network interfaces with random MAC address
On 07/20/2010 11:20 PM, David Miller wrote:
> From: Stephen Hemminger<shemminger@vyatta.com>
> 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? :-)

It already does:
see /lib/udev/rules.d/75-persistent-net-generator.rules


\
 
 \ /
  Last update: 2010-07-21 08:29    [W:0.063 / U:0.236 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site