Pools and IPv6

[Fred Zwarts]

Others have told you already about the missing fail-over.
The other problem, that pools do not accept range6 staetments 
is known now for a few years and has been reported on this mailing 
list a few times, but up to now no reaction has been seen.

Another, related problem, with the use of dynamic addresses
(using range6 statements) is that "deny unknown-clients"
has no effect. As soon as a range6 is declared, all hosts
without a fixed-address6 declaration use this range,
including hosts not mentioned in the configuration.
We did not find a way to exclude unknown hosts from
the defined ranges.

This was for us a reason to delay the introduction of dynamic IPv6 addresses 
until a better solution is found.

---- Original Message ----
From: "Paolo Prandini" <prandini at spe.net>
To: <dhcp-users at lists.isc.org>
Sent: Monday, November 15, 2010 7:57 PM
Subject: Pools and IPv6

> I am trying to use pools in IPv6 because I want to have a failover
> peer. 
> Unfortunately if I define a pool and then specify a range6 like:
> 
> subnet6 2a00:19a8::/64 {
> 
>         option dhcp6.name-servers       2a00:19a8::6, 2a00:19a8::7;
> 
>         default-lease-time 1800;
>         max-lease-time 3600;
> 
>         pool {
>                 failover peer "dhcp-failover";
>                 range6 2a00:19a8:1::1;
>         }
> 
> }
> 
> I get an error:
> 
> Nov 15 19:51:33 dns1 dhcpd: /etc/dhcp/dhcpd6.conf line 31: range6
> declaration not allowed here. Nov 15 19:51:33 dns1 dhcpd:            
> range6 
> Nov 15 19:51:33 dns1 dhcpd:                  ^
> Nov 15 19:51:33 dns1 dhcpd: /etc/dhcp/dhcpd6.conf line 32: Pool
> declaration with no address range. Nov 15 19:51:33 dns1 dhcpd:     }
> Nov 15 19:51:33 dns1 dhcpd:          ^
> Nov 15 19:51:33 dns1 dhcpd: Pool declarations must always contain at
> least 
> Nov 15 19:51:33 dns1 dhcpd: one range statement.
> 
> But if I don't use a pool I cannot have failover peers!
> Do you have any idea?
> Thanks a lot for your help
> Paolo
> 
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