[Dnsmasq-discuss] IPv6 support missing in "dhcp_release" and "dhcp_lease_time" tools

Simon Kelley simon at thekelleys.org.uk
Mon Apr 22 15:21:23 BST 2013

On 21/04/13 16:40, Tomas Hozza wrote:
> Hi Simon.
> I just noticed that tools in "contrib/wrt", specifically
> dhcp_release and dhcp_lease_time  don't support IPv6. We ship
> those tools as part of dnsmasq subpackage in Fedora. Do you
> have any plans to provide support for IPv6 in those tools
> or to provide their IPv6 equivalents?
> Thank you.
> Regards,
> Tomas Hozza

DHCPv6 is a whole different protocol, and the hacks used by those tools 
don't read-across well to it. For instance you can't use MAC addresses 
to identify leases, in fact you can't easily get a handle of a 
particular interface at all, since even a client-id, 
interface-adaptor-id pair my be associated with more than one lease, 
each of which has a different lease time.

Do you have an application in mind for this? If so it's worth thinking 
about how to do it properly (Maybe via DBUS?).

Looking that this, I did realise that the existing DHCPv4 
dhcp_lease_time tool got broken in release 2.64, and I've fixed that for 



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