Re: Running code (Was: I-D Action: draft-ietf-6man-ipv6only-flag-03.txt)

[Philip Homburg <[e-mail]>]

> So, here's the challenge which you seem to be holding back from,
> write down the actual rules. No hand waving that "that's a good
> clue", but actual rules that "if you see <some observable state>
> then <do some specific action>".

My take on it:

1) If a host has a global IPv6 address and is unable to reach a DHCPv4
   server, then after a short while agressively reduce the rate of DHCP
   multicast messages
2) If a host has a global IPv6 address and it configures an IPv4 link local
   address then the host should consider only 169.254.0.0/16 to be 
   onlink.

Note: this second requirement makes sure that any global IPv4 address that
the host knows or learns will not result in any traffic, because the host
does not have a default router.

3) If a host has a global IPv6 address and a link local IPv4 address then
   the host should agressively reduce the rate of any service discovery
   multicasts on IPv4.