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From: Andrew Lunn <andrew@lunn.ch>
To: Karsten Wiborg <karsten.wiborg@web.de>
Cc: Heiner Kallweit <hkallweit1@gmail.com>,
	nic_swsd@realtek.com, romieu@fr.zoreil.com,
	netdev@vger.kernel.org
Subject: Re: r8169 not working on 5.2.0rc6 with GPD MicroPC
Date: Sun, 30 Jun 2019 19:56:41 +0200	[thread overview]
Message-ID: <20190630175641.GB5330@lunn.ch> (raw)
In-Reply-To: <3825ebc5-15bc-2787-4d73-cccbfe96a0cc@web.de>

> The vendor part of my MAC is 6e:69:73 which is interesting because
> according to some Vendor-Lookup-pages the vendor is unknown.

0x6e = 0110 1110b. Bit 1 is the Locally Administered bit. Meaning this
is not an MAC address from a vendor pool, but one generated locally.

http://www.noah.org/wiki/MAC_address

If linux were to generate a random MAC address it would also set bit
1.

What is interesting is that you say you get the same value each
time. So it most either be stored somewhere, or it is generated from
something, the board serial number, etc.

	   Andrew

  parent reply	other threads:[~2019-06-30 17:56 UTC|newest]

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-06-29 20:34 r8169 not working on 5.2.0rc6 with GPD MicroPC Karsten Wiborg
2019-06-29 21:19 ` Karsten Wiborg
2019-06-29 22:09 ` Heiner Kallweit
2019-06-30  0:14   ` Karsten Wiborg
2019-06-30  9:12     ` Heiner Kallweit
2019-06-30 12:40       ` Karsten Wiborg
2019-06-30 14:55         ` Andrew Lunn
2019-06-30 16:03           ` Karsten Wiborg
2019-06-30 17:42             ` Heiner Kallweit
2019-06-30 21:29               ` Karsten Wiborg
2019-06-30 21:55                 ` Heiner Kallweit
2019-06-30 22:21                   ` Karsten Wiborg
2019-07-01  5:50                     ` Heiner Kallweit
2019-07-01 13:35                       ` Andrew Lunn
2019-07-01 18:15                         ` Karsten Wiborg
2019-07-01 18:51                           ` Heiner Kallweit
2019-07-01 19:07                             ` Karsten Wiborg
2019-06-30 17:56             ` Andrew Lunn [this message]
2019-06-30 21:44               ` Karsten Wiborg

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