use og ping-check

Simon Hobson dhcp1 at
Tue Mar 17 13:25:13 UTC 2009

Staffan.Ungsgard wrote:
>Does the ISC Dhcp server Windows Vista work together regarding to "ping" ?
>This is a snippet from Microsoft regarding Windows Vista and ping:
>"After you assign or change an IP address on a Windows Vista-based 
>computer, the system searches the network for a computer that is 
>already using this IP address. If the search reveals no computer 
>that is already using this IP address, the IP address is officially 
>assigned to the Windows Vista-based computer. The problem that is 
>described in the "Symptoms" section occurs if another computer sends 
>a ping message to the new IP address before the system finishes the 
>search process. The system was not designed to be pinged while it is 
>searching for a new IP address. "
>Full info here:
>Can the DHCP-server ping makes Vista nack the lease because it 
>thinks someone else has the address ?

I'm not sure. As I understand it, Vista has a problem if it gets a 
ping just after it gets the address via DHCP. The ISC does the ping 
before making an offer. I would expect the ping to arrive before the 
offer, and so it shouldn't be triggered.

I have to say though, it never ceases to amaze at how imaginative 
people can be when creating bugs !

Simon Hobson

Visit for books by acclaimed
author Gladys Hobson. Novels - poetry - short stories - ideal as
Christmas stocking fillers. Some available as e-books.

More information about the dhcp-users mailing list