The alternative scenarios and management models for sunsetting do not
seem to have been discussed: e.g.
1) allow a customer to run their own home router and control their own
broadcast traffic and multicast traffic. With IPv6 there's no reason why
stacked routers are harmful, because there's no NAT going on
2) ISP to provide an additional IPv6 only CPE router at the perimeter of
the L2 broadcast network, again to limit the broadcast domain
3) to filter using MAC + DHCPv4 black hole addresses
4) to use an out of band management protocol such as active directory to
turn off IPv4 in the kernel
5) to request users manual disable IPv4 when contracting the new IPv6
only service
6) tolerate the noise and let IPv4 die a natural death
7) provide separate logical networks for IPv6 only users and legacy IPv4
users
8) allow IPv4 to exist as individual disconnected islands
Michael Richardson wrote:
<snip>
And again: if it's too hard, don't implement it (certainly not in open
source, for free), thousands of devices will never get updated to have it
anyway.
--
Michael Richardson<[email protected]>, Sandelman Software Works
-= IPv6 IoT consulting =-
That's rather disingenuous.
The justification for this solution seems to be based on a very myopic
view of the Internet.
What may happen is that something like this may be implemented (because
it's good for the particular ISPs that heavily rely on large L2
networks) whereas it does not benefit people who route everything (other
ISP's and enterprises or home users who manage their own routers and
thus broadcast domain.)
Large and small enterprises will then have to scramble to filter rogue
IPv6 DHCPv6 servers, even if they aren't running IPv6 yet internally on
their networks, and their switches are probably too old to support RA
Guard. They'll also want a kill switch on the kill switch in the OS.
'shutdown -h now' as a DHCPv6 option? That's effectively what's being
proposed AFAICS.
Why can't I continue to run IPv4 in the privacy of my own home (as an
Island)? RFC 6724 will ensure that IPv6 is preferred for all off site
traffic.
--
Regards,
RayH
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