Can fixed addresses ever be taken by dynamic ranges

R Landster dchp_mailing at
Wed Jun 6 17:02:28 UTC 2007

I have a question concerning the algorithm used to choose the IP address 
upon a DHCP request.

Here is the complete dhcp configuration:

#### START OF dhcp.conf
authoritative ;
deny unknown-clients ;
subnet netmask {
   option routers ;
   range ;
   hardware ethernet 00:66:B7:86:FC:5F ;
   fixed-address ;
   hardware ethernet 00:B4:20:68:1E:77 ;
#### END OF dhcp.conf

Here is the question: Are there any circumstances under which the IP 
address '' would ever be leased out to MYLAPTOP?

For example, assume that MYLAPTOP has never been on the network. Is it 
possible that the DHCP service might give out Or is the 
DHCP service "smart" enough to realize that is meant for a 
specific machine, even if that machine is not (or never has been) on the 


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