Failover with IPv6

[sthaug at nethelp.no]

> I try to configure a failover-server like in DHCPv4 with DHCPv6, but it doesn't work.
> 
> The line "address aaaa:bbbb:cccc:12::1" seems to be incorrect, but the same line with "address6" doesn't work, too.
> 
>  
> 
> I use the following configuration:
> 
>  
> 
> failover peer "dhcp" {
> 
> primary;
> 
> address aaaa:bbbb:cccc:12::1;
> 
> port 520;
> 
> peer address aaaa:bbbb:cccc:12::2;
> 
> peer port 520;
> 
> [...]
> 
> }
> 
>  
> 
> Does anybody know the correct failover-configuration for DHCPv6/IPv6?

Failover for DHCPv6 is not implemented. There is no standard. Work has
started but is quite a long way from finished.

Since there is plenty of IPv6 address space, the simple solution is to
configure two separate servers with non-overlapping DHCP scopes. This
will obviously not give you address *stability*, but it will give you
some level of redundancy.

Steinar Haug, Nethelp consulting, sthaug at nethelp.no