dhclient with IPv6 and PD hints

Mike. the.lists at mgm51.com
Tue Apr 15 18:03:12 UTC 2014

On 4/8/2014 at 10:01 PM Bjørn Mork wrote:

|"Mike." <the.lists at mgm51.com> writes:
|> On 4/4/2014 at 2:08 PM Mike. wrote:
|> |What is the configuration file syntax to request a prefix
|> |of a size other than a /64?
|> |
|> |Comcast recently fired up IPv6 dual stack in my area.   The IA-PD
|> |request gives me a /64 delegation.
|> |
|> |If I specify that I want a /60 in the PD hints, then Comcast will
|> |delegate a /60 prefix to me so that I can split it up into /64
|> my
|> |subnets.
|> |
|> |
|> |Only, I cannot seem to find out how to get the ISC dhclient
|> |to request the /60 via a PD hint.  
|> |
|> |
|> |What am I overlooking?
|> |
|> |Thanks.
|>  =============
|> Anyone?
|Looking at the code there doesn't seem to be any way to configure
|Unless you have an existing lease, the request will be for ::/0,
|i.e. whatever the server defaults to.
|You might be able to hack it to do what you want by creating a lease
|file with a suitable prefix-length.

Based upon your suggestion, I looked at a couple of options and
decided to precede in this direction.

	Prefix delegation preference patch for ISC-DHCP IPv6 client 

Thanks again for your reply.


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