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

Matthias May matthias.may at westermo.com
Thu Sep 9 12:39:30 UTC 2021


On 09/09/2021 14:31, Matthias May wrote:
> On 09/09/2021 11:22, 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
> 
> Hi
> 
> The Metric is not part of DHCP, but is a local decision of the client.
> 
> See https://www.rfc-editor.org/rfc/rfc2132.html section 3.5 that describes DHCP option 3.
> 
> Alternatively if you want to use DHCP option 121 see https://www.rfc-editor.org/rfc/rfc3442.html
> section "Classless Route Option Format".
> 
> BR
> Matthias
> 

I'm sorry scratch the above... I kind of ignored that this is a question about IPv6 ^^"

BR
Matthias

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