Hi!

When zeroconf/ipv4ll support is added to ifupdown It would be
advisable to also add special ipv4ll routes to every interface
regardless whether ipv4ll is actually configured or not:

 route add -net 169.254.0.0 netmask 255.255.0.0 dev $IFACE metric 99 
 route add default dev $IFACE metric 99

These special routes allow communication between ipv4ll and non-ipv4ll
hosts without difficulties.

These routes should be added to *all* interfaces and in all cases!
This can easily be implemented by just sticking a shell fragment into
/etc/network/if-up.d/ipv4ll-routes with the two lines mentioned above.

For a discussion of these routes, please read:

http://avahi.org/wiki/AvahiAutoipd#Routes
http://developer.apple.com/qa/qa2004/qa1357.html
http://lists.freedesktop.org/archives/avahi/2006-September/000878.html

Thank you very much,

      Lennart


-- 
Lennart Poettering; lennart [at] poettering [dot] net
ICQ# 11060553; GPG 0x1A015CC4; http://0pointer.net/lennart/


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