[Cerowrt-users] IPv6 router advertisements on custom interfaces

[Dave Taht]

Radvd is going away in the BB ("barrier breaker" - openwrt head)
version of openwrt, fairly soon. It deserves to die...

There is going to be a merger of the DHCPv6/SLAAC and naming
functionalities in dnsmasq and the dynamicism of the new ipv6-support
package, which also includes a spanking new dhcpv6-pd client..

Also planned is to (once the 3.7 kernel lands) make npt66 the default
(for most users). So in a couple weeks, all the underlying ipv6
infrastructure in openwrt and cerowrt is going to change.

As to whether the 6in4 case is fully handled as of now in that system,
damned if I know. Same goes for 6to4... I put the ipv6-support package
into cerowrt 3.6.9-5, all forms of ipv6 are blocked at the lincs lab,
can't test it, right now.

As for how to fix it in cerowrt 3.3.8, it was always problematic as
hell, and I'm glad the work is being re-architected in BB by two of
the most competent people I know, and I've signed cerowrt (and thus,
y'all) up to test it when it comes out. It would be great to recruit
more help, because *this time* we're going to get it right, come hell
or high water.

I'm very pleased, in particular, with dnsmasq's naming support for
slaac. It "just works".


On Mon, Dec 10, 2012 at 12:04 AM, Michael Richardson <mcr at sandelman.ca> wrote:
>
> First question, why are there two radvd processes?
>
> 3343 root       964 S    /usr/sbin/radvd -C /var/etc/radvd.conf -m stderr_sys
> 3345 root       964 S    /usr/sbin/radvd -C /var/etc/radvd.conf -m stderr_sys
>
> Is this just a thread issue?
>
> second question, none of my custom interfaces are in /var/etc/radvd.conf?
>
> Can I hack /etc/config/firewall directly rather than go through the UI?
> I think so....?
>
> Could I attach blinking LEDs to VLANs?
> (ps: whatever problems I had with ethernet mii between my cerowrt and
> a cisco 200-26 switch in the summer, seems to have gone away)
>
> On an IPv6 interface which is not my uplink, I think that IPv6 gateway
> should be blank.  That the router should advertise iself.
>
> I also think that the words "Send router soliciations" is wrong, that it
> should say, "Send router advertisements".
>
> I had to put my custom interfaces into /etc/config/radvd.
>
> config interface
>         option interface 'trusted'
>         option AdvSendAdvert '1'
>         option AdvRouterAddr '1'
>         option AdvLinkMTU '1480'
>         option ignore '0'
>         option IgnoreIfMissing '1'
>         option AdvSourceLLAddress '1'
>         option AdvDefaultPreference 'medium'
>         option AdvOtherConfigFlag '1'
>
> config prefix
>         option interface 'trusted'
>         list prefix ''
>         option AdvOnLink '1'
>         option AdvAutonomous '1'
>         option AdvRouterAddr '0'
>         option ignore '0'
>
> I don't see a place in the UI where this is edited, but I could be
> missing it.
>
> --
> ]       He who is tired of Weird Al is tired of life!           |  firewalls  [
> ]   Michael Richardson, Sandelman Software Works, Ottawa, ON    |net architect[
> ] mcr at sandelman.ottawa.on.ca http://www.sandelman.ottawa.on.ca/ |device driver[
>    Kyoto Plus: watch the video <http://www.youtube.com/watch?v=kzx1ycLXQSE>
>                        then sign the petition.
>
>
>
>
>
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-- 
Dave Täht

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