[Dnsmasq-discuss] ipv6 - How to add static route with metric

[Daniel]

Hello Simon

Le 10/09/2021 à 00:52, Simon Kelley a écrit :
> On 09/09/2021 10:22, Daniel via Dnsmasq-discuss wrote:
>> Hello,
>>
>> using dnsmasq for office network, I would like to add an ipv6 static
>> route. My configuration looks like
>>
>> dhcp-range=set:computer6, fd00:5678:beef:cafe::ff:0,
>> fd00:5678:beef:cafe::ff:ffff, slaac, ra-names, 1h
>> dhcp-option=tag:computer6,option6:3,fd00:5678:beef:cafe::2
>> dhcp-option=tag:computer6,option6:6,fd00:5678:beef:cafe::1
>> dhcp-option=tag:computer6,option6:ntp-server,fd00:5678:beef:cafe::2
>>
>> Now I want to add route like <destination network,metric,GW>
>>
>> dhcp-option=tag:computer6,option6:3,fd00:5678:beef:cafe:fade::/96,192,fd00:5678:beef:cafe::1
>>
>>
>> but this does not work (also tried <GW,metric,destination network>
>>
>> What am I doing wrong ?
>>
>> Thanks for your support
> The space of option numbers in DHCPv6 is not the same as the space of
> option numbers in DHCPv4. Just because option  3 in DHCP4 sets the
> default route, doesn't mean that option 3 sets the default route on
> DHCPv6 - option 3 does something completely different in DHCPv6. The
> same is true for option 6 - the option NUMBER for the DNS server in
> DHCPv6 is 23.
>
> The function of option 3 in DHCPv4 is done using router advertisements
> in IPv6 land - there's no direct equivalent of the DHCP option at all,
> and for a generalised static route, I don't believe that a DHCPv6 option
> has been defined. There's an expired draft proposal which is insanely
> complex,
>
> https://datatracker.ietf.org/doc/html/draft-ietf-mif-dhcpv6-route-option-05
>
> But it has never been ratified as an RFC.

You confirm what Petr wrote, will find another way to archieve my goal.

Thanks for your help

-- 
Daniel