Re: IPv6 with DHCP -- how is default route set?

[Eloy Paris <peloy chapus net>]

On Tue, Oct 20, 2015 at 08:26:42PM +0300, Andrei Borzenkov wrote:

> 20.10.2015 19:37, Eloy Paris пишет:
> > I realize now that it is not that nothing happened but that things took
> > a long time (a couple of minutes) to happen -- first, there was a delay
> > to get an IPv6 address, and then there was a delay (after the interface
> > had a global IPv6 address) to see the default route installed.
> >
> > Are these delays normal; do they depend on the frequency of router
> > advertisements? If so, can NM not elicit a router advertisements by
> > sending a router solicitation? If that is what is supposed to happen
> > then I don't understand the delays. In contrast, IPv4 configuration is
> > immediate.
>
>       MaxRtrAdvInterval
>                      The maximum time allowed between sending
>                      unsolicited multicast Router Advertisements from
>                      the interface, in seconds.  MUST be no less than 4
>                      seconds and no greater than 1800 seconds.
>
>                      Default: 600 seconds
>
> Routers are expected to send advertisements in random intervals
> between minimal and maximal interval, in the worst case you may have
> 30 minutes ...

Thanks Andrei.

We must not be doing something right because it is not reasonable to
have to wait more than a few seconds for IPv6 networking to be fully
configured.

Do we not send router solicitation messages to avoid having to wait for
the next router advertisement message, which could happen who knows
when?

Cheers,

Eloy Paris.-