Fedora Users — Re: hostid gives identical values on all FC machines

Re: hostid gives identical values on all FC machines

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To: For users of Fedora Core releases <fedora-list@xxxxxxxxxx>

Subject: Re: hostid gives identical values on all FC machines

From: "Tammar K. Ajam" <tammarajam@xxxxxxxxx>

Date: Wed, 15 Dec 2004 16:45:40 +0300

In-reply-to: <[email protected]>

Organization: GSCS

References: <[email protected]> <[email protected]> <[email protected]> <[email protected]> <[email protected]> <[email protected]>

Reply-to: tammarajam@xxxxxxxxx, For users of Fedora Core releases <fedora-list@xxxxxxxxxx>

User-agent: Mozilla Thunderbird 0.8 (X11/20041020)

James Wilkinson wrote:

Marvin Dickens wrote:

MAC addresses contained in the eeproms of network equipment are
absolutely unique and singular. There
is no possibility of the a MAC address having plurality unless the MAC
address in the eeprom contained in the network equipment has been
altered by someone with a hex editor and an eeprom burner. Sure, you can
alias the MAC address using software, but the MAC address in the eeprom
is *never* altered.

This is a lovely theory and generally true.

But this is the computer industry. There have been various "budget"

Yes it's truth.
I test 20 MBs which had the same model no.
All the built in Network card have the same MAC address.
These MB was made by a company called kobian (Made in china).
When these Card connected to a DHCP server they optain the same IP address on all the PC
Tammo

Ethernet manufacturers that have used the same MAC for an entire
production run, to save costs.

If they go into the consumer market, there's no problem. In businesses,
too, provided they buy their computers individually. But if you buy a
multipack of really identical Ethernet cards...

I understand that this is a real pain to track down if you haven't seen
it before.

James.