Re: DHCP giving out wrong subnet IP

. . . 
>> > On 29/03/2017 13:43, Joe Acquisto-j4 wrote:
>> >> IPCop v2.1.9.    Seems to be working fine otherwise.
>> >> 
>> >> Occasionally a device on my GREEN will get handed an address from my BLUE
>> > 
>> > network.   This is disconcerting.
>> > 
>> >> In fact, one of the devices was supposed to have a fixed lease.    In
>> >> this
>> > 
>> > case it happened right after a reboot after applying latest patch Tuesday
>> > stuff for Windows 7.   (Yes, it's true I must win from time to time. . .
>> > ).
>> > A reboot provided the correct IP.   This is a Dell of recent Vintage.
>> > 
>> >> Prior to this it happened to a different box an older Toshiba
>> >> L505-ES5010,
>> > 
>> > rescued from a scarp pile, mended and now condemned to life as a "beater",
>> > (poor thing) while tinkering with different OS installs.   This one was
>> > free to accept any address.
>> > 
>> >> joe a.
>> 
> 
> Some boxes have a BIOS which finds network interfaces in random order, and 
> eth0, eth1, eth2, eth3 could then refer to any of the physical interfaces. 
> This can be fixed by doing an if-pre-up check to ensure that each in turn has 
> the correct MAC address. See man interfaces.
> 
> -- 
> Chris Bell
> website chrisbell.org.uk
> 

You are referring to the "client" side box, correct?  If so, the boxes in question have only one physically connected NIC.  

The IPCop box was not rebooted during that time.   Although I did reboot it after the client regained a proper GREEN address.  Just because.

joe a.


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