On 10/7/20, 12:53 PM, "Linux on 390 Port on behalf of Alan Altmark" 
<[email protected] on behalf of [email protected]> wrote:

> I have talked up DHCP's ability to use a user ID instead of a 
> MAC address

Option 61 (the DHCP option that allows the string option) can be any unique 
arbitrary string. It can be used to request information for point-to-point 
links that are not broadcast capable as long as there is one broadcast-capable 
address available to locate the DHCP server. The DHCP server gets the string 
and does its thing so 'mysystem-hsi1' or 'mysystem-ctc0' is a perfectly valid 
use of the capability. 

> IMO, the ease of making VM TCP/IP come up with a different configuration 
> file based on external criteria eliminates the need for a DHCP client. 

In a limited way, but why have to remember to do it or fool around with 
node/system name qualifiers in TCPIP CONFIG if there is a way to not have to 
change anything and have it Just Work AND be consistent with every other host 
and address management process in the whole world? Seems like one big battle we 
don't need to fight. 

It would also let you ship a completely functional TCPIP out of the box, no 
configuration required - just plug in the OSA, attach it to TCPIP at a 
predefined address and you're up and running. Think of the documentation pages 
saved... __

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