[NTLUG:Discuss] philosophical dhcpcd question

[Fred James]

But you cannot ping a private range IP over the Internet, can you?

Richard Geoffrion wrote:

>Fred James wrote:
>
>>OK, but why?  Please understand that this is not a question of how it
>>is, or what happens, nor am I suggesting the world change to fit my
>>current whim.  It fairly is easy to understand why we might want a
>>DHCP client to try to retain a single IP for the duration of its
>>connection, or possibly even upon reestablishing a failed connection,
>>as long as it is connected to the same DHCP sever.  But is there any
>>reason to want that DHCP client to try to keep the same IP it had
>>before power down, when it is powered up connected to a different
>>DHCP server?
>>
>
>In my case, when users have the same ip address it makes it easy for me as
>an administrator to ping x.x.x.x to test this that or the other.  Sometimes
>I want the flexibility of automatically setting someone's IP settings
>(gateway, dns, domain name...etc) but I want the address to be permenant for
>reasons like using VNC for remote control support purposes.  That's why I
>like dhcp and why I like people to keep the same address --  Network
>administration becomes MUCH easier.
>
>However, DHCP can be made to be more 'dynamic'.  All I have to do is setup a
>lease time of 5 minutes and as long as a workstation is turned on and logged
>in, they will continually renew their IP address.  Turn off the workstation
>and take it home and the lease is expired.  Of course it will try to
>re-lease the same IP address.....so we're back to the issue of having to
>tell the client to release it's IP address.
>
>A short lease time DOES cause much more traffic, but can also be a help when
>you are preparing to switch out network resources...like say a dhcp server
>or gateway change.
>
>/dev/rtcg
>
>
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>
>

-- 
small is beautiful


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