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Re: .255 and .0 addresses

  • From: Jon Lawrence < >
  • Date: Sun, 12 Sep 2004 20:14:43 +0100

On Sunday 12 September 2004 18:05, Volodymyr Yakovenko wrote:
> Dear Colleagues,
>
>  I am trying to push one BIG telecom equipment vendor TAC to consider wrong
>  situation with assignment of IP addresses like xxx.xxx.xxx.0 and
>  xxx.xxx.xxx.255 from dynamic IP pools bigger than or equal to /24.
>
>  Quick googling has not shown any STD or BCP documents, which could be used
>  as reference, but has shown number of pages, saying something like "do not
>  use .0 or .255 addresses, it could cause problems".
>

Without doubt, the pools must be bigger than /24 in order for .0 or .255 to be 
used as host addresses. Never tried it personally, but I can see no reason 
why .0.255 or .1.0 wouldn't be usable in a .0.0/23 - obviously assuming that 
you pass /23 to the hosts as a netmask.

Jon



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