[Cerowrt-devel] IPV6 success on 3.10.28-14 with 6to4 tunnel and 6relayd

[Dave Taht]

until very recently I was using the dnsmasq version of the RA stuff,
(basically uncommenting
everything in /etc/dnsmasq.conf )

I was under the impression that what I'd had switched to worked, but didn't
try this scenario. (it seems to work on the default gw box, but not internally)

I tend to pretty much run babel everywhere, too, which doesn't help...

Anyway, on the interior gateway I have going...

I statically assign something available from my /60 to the se00
interface, and I no longer get a message from
that interface saying this:

Mon Feb 24 03:07:03 2014 daemon.warn odhcpd[1318]: A default route is
present but there is no public prefix on gw00 thus we don't announce a
default route!
Mon Feb 24 03:07:03 2014 daemon.warn odhcpd[1318]: A default route is
present but there is no public prefix on sw00 thus we don't announce a
default route!
Mon Feb 24 03:07:03 2014 daemon.warn odhcpd[1318]: A default route is
present but there is no public prefix on gw10 thus we don't announce a
default route!
Mon Feb 24 03:07:03 2014 daemon.warn odhcpd[1318]: A default route is
present but there is no public prefix on sw10 thus we don't announce a
default route!

(so I assume it's trying to announce a default route to the se00
interface, or at least thinks it is)

I am seeing the /60 inserted into the local default table as well as a
generic route inserted by ras...

default from :: via fe80::8e:f2ff:fefa:a153 dev ge00  proto static  metric 1024
default from 2601:9:6680:530::/60 via fe80::8e:f2ff:fefa:a153 dev ge00
 proto babel  metric 1024

so I:

killall -1 odhcpd # this forces a RA

But in doing that, I am not seeing a default route announced via RA
via radvdump. Sigh.

    prefix 2601:X:Y:535::/64
    {
        AdvValidLifetime 7200;
        AdvPreferredLifetime 1800;
        AdvOnLink on;
        AdvAutonomous on;
        AdvRouterAddr off;
    }; # End of prefix definition


    RDNSS 2601:X:Y:535::1
    {
        AdvRDNSSLifetime 1800;
    }; # End of RDNSS definition


    DNSSL desk.armory.com
    {
        AdvDNSSLLifetime 1200;
    }; # End of DNSSL definition

/etc/config/dhcp has this in it, which sort of matches your 6relayd config

config dhcp 'se00'
        option interface 'se00'
        option start '2'
        option limit '26'
        list dhcp_option '42,0.0.0.0'
        list dhcp_option '44,0.0.0.0'
        list dhcp_option '45,0.0.0.0'
        list dhcp_option '46,8'
        option leasetime '24h'
        option domain 'desk.armory.com'
        option ra 'server'
        option dhcpv6 'server'

On Sun, Feb 23, 2014 at 9:35 PM, Vincent Frentzel <zcecc22 at c3r.es> wrote:
>> > Hi everyone,
>> >
>> > After struggling a while with odhcpd and route propagation I wanted to
>> > report that I got ipv6 working with the following config for 6relayd.
>>
>> I am under the impression that 6relayd is now obsolete and that these
>> are controlled in the /etc/config/dhcp file.
>
>
> That is correct. However, when using odhcpd I could nt get IPV6 routing over
> different segments (ie pings from SW10 to SE00 gave network unreachable).
> In the end 6relayd worked althoug Im not sure why.
>
> Im curious to see if anyone has encountered the same issue.
>
>
> On Sun, Feb 23, 2014 at 5:07 PM, Dave Taht <dave.taht at bufferbloat.net>
> wrote:
>>
>> On Fri, Feb 21, 2014 at 12:15:13AM +0100, Vincent Frentzel wrote:
>> > Hi everyone,
>> >
>> > After struggling a while with odhcpd and route propagation I wanted to
>> > report that I got ipv6 working with the following config for 6relayd.
>>
>> I am under the impression that 6relayd is now obsolete and that these
>> are controlled in the /etc/config/dhcp file.
>>
>> >
>> > config server se00
>> >         list network    se00
>> >         option rd       server
>> >         option dhcpv6   server
>> >         option management_level 1
>> >
>> > config server sw00
>> >         list network    sw00
>> >         option rd       server
>> >         option dhcpv6   server
>> >         option management_level 1
>> >
>> > config server sw10
>> >         list network    sw10
>> >         option rd       server
>> >         option dhcpv6   server
>> >         option management_level 1
>> >
>> >
>> > Hope this can be of use to someone or contribute to the next release :)
>> >
>> >
>> > BR,
>> >
>> > Vincent
>>
>> > _______________________________________________
>> > Cerowrt-devel mailing list
>> > Cerowrt-devel at lists.bufferbloat.net
>> > https://lists.bufferbloat.net/listinfo/cerowrt-devel
>>
>> _______________________________________________
>> Cerowrt-devel mailing list
>> Cerowrt-devel at lists.bufferbloat.net
>> https://lists.bufferbloat.net/listinfo/cerowrt-devel
>
>
>
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-- 
Dave Täht

Fixing bufferbloat with cerowrt: http://www.teklibre.com/cerowrt/subscribe.html