dhcpd.conf ddns config question

Simon Hobson dhcp1 at thehobsons.co.uk
Wed Jul 5 08:05:40 UTC 2006

Alex Sharaz wrote:

>Just curious but if you have a range and
>your dhcp server has never assigned an ip address out of that range, hat
>algorithm is used to assign the 1st address. Does it just start "from
>the top" and work its way down, or at the bottom ( in this
>case ) or what?

That is implementation specific and liable to change without notice, 
and it's not something that matters anyway. But, at present the ISC 
server allocates top-down, so it will allocate the highest address 

Once all addresses have been used once, it re-allocates expired 
leases on a least recently used basis - so once you get to this 
state, address allocation will because pseudo random.


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