[avahi] avahi-autoipd

[chris mcharg]

Thanks for the confirmation Lennart, it's very much appreciated.

Chris


On 2006/09/07, at 0:38, Lennart Poettering wrote:

> On Tue, 05.09.06 22:59, chris mcharg (chris at outtrack.org) wrote:
>
>> -- route add default dev eth0 metric 99 --
>>
>> This makes sure that data bound for routable addresses is dumped via
>> eth0 even when we only have a ipv4ll address, as the routable
>> addressed host should be able to respond to us.  As such, it only
>> needs to be set when we have our ipv4ll address set.
>
> Yes, that's how I understood it.
>
>> -- route add -net 169.254.0.0 netmask 255.255.0.0 dev eth0 metric  
>> 99 --
>>
>> This ensures that we respond to ipv4ll addressed hosts even when we
>> have a routable address set.  Therefore, it should be set by default
>> at boot.
>
> That's mostly right. However this route is not explicitly necessary if
> an IPv4LL address is assigned, because a route like this one is
> implicitly added by the kernel in that case anyway.
>
> In other words: the first route allows packet flow from a
> IPv4LL-only hosts to a host with only a routable address. And the
> second route allows the packet flow in the other direction.
>
> The trick is to set the metric to 99 which makes sure that the routes
> only take effect if no other routing is configured and allows them to
> be set in all cases, with or without IPv4LL configured, without any
> drawbacks.
>
> As long as only IPv4LL-only hosts want to communicate, or as long as
> only hosts with routable address want to communicate neither of the
> routes is required.
>
> Lennart
>
> -- 
> Lennart Poettering; lennart [at] poettering [dot] net
> ICQ# 11060553; GPG 0x1A015CC4; http://0pointer.net/lennart/
> _______________________________________________
> avahi mailing list
> avahi at lists.freedesktop.org
> http://lists.freedesktop.org/mailman/listinfo/avahi