On Sep 4, 2006, at 10:16 AM, Lennart Poettering wrote: Apple has this page on mixed routable and ip4ll addresses: http://developer.apple.com/qa/qa2004/qa1357.html I have no idea of the default routing settings of most of the linux distributions, but it seems debian at least doesn't have the settings for responding to a host with an ipv4ll address when a routable address is set. Do you have any plans for providing defaults/ guidance for these?
I'll leave this up to the distributions.
Honestly I believe that their claim "Most modern Linux distributions already include full IPv4 link-local support" is not true.
I'll take the blame for that. I was the one who wrote that article and I thought it was true.
I see the point for adding these routing table entries, though. Although I am sure they're not without problems. Adding these rules will force the usage of ARP for all destinations that do not have an explicit route defined. This will cause ARP timeouts and might be a security hole. However the impact of this is not entirely clear to me.
These routes only take affect when you have no other routes configured, so as long as you have a router address configured, these entries will not be used. Mac OS X ships with these routes by default and I've never heard of any reported issues with them.
-Marc
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