In your letter dated Fri, 18 Apr 2014 09:57:21 -0430 you wrote: >You are absolutely right...., thanks. >But anyway the scenario I mentioned above can also exists (and for good >or bad eventually will happen).. I just wanted to express my position >about the option NO-IPv4 in DHCPv4
I'd say that if you want to play games and turn off IPv4 for some hosts and not for others then you are better off putting the option in DHCPv4. Putting the option in RA makes it all or nothing. You either tell all IPv6 hosts to turn off IPv4 or none. Putting the option in DHCPv6 requires careful coordination between the DHCPv6 and DHCPv4 configs. The DHCPv6 server would have to send the option in the IPv6 config and the DHCPv4 server has to refrain from sending an offer. This can be tricky if the DHCPv4 and DHCPv6 device ids are different. In contrast, putting the option in DHCPv4 only requires setting a flag in the DHCPv4 config that particular host should not get IPv4. If we require the DHCPv4 client to include the option in the DISCOVER then it is also easy to tell old and new hosts apart. _______________________________________________ homenet mailing list homenet@ietf.org https://www.ietf.org/mailman/listinfo/homenet
