<br><br><div class="gmail_quote">On Sat, May 19, 2012 at 5:57 AM, Tore Anderson <span dir="ltr"><<a href="mailto:tore.anderson@redpill-linpro.com" target="_blank">tore.anderson@redpill-linpro.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Hi,<br>
<br>
* John Jason Brzozowski<br>
<div class="im"><br>
> Tore your CMTS could be dropping the CONFIRM message. I know of only ><br>
one CMTS that drops this type of message. The Cisco 10K.<br>
<br>
</div>The CMTS has a Cisco MAC address, so it seems likely that this is the<br>
reason why it doesn't work. Thanks - I'll discuss this with my provider.<br></blockquote><div>[jjmb] there are some other things we should discuss offline, perhaps with your provider that I imagine are of interest. contact me at work if you wish to discuss. </div>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div class="im"><br>
> The operator probably has two separate DHCPv6 servers running for<br>
> redundancy. As such, and in the absence of DHCPv6 failover support,<br>
> both servers will send an ADVERTISE. Does one server have a higher<br>
> preference value than the other?<br>
<br>
</div>No preference values are being transmitted in the ADVERTISE messages.<br>
Hmm. I've had my PD prefix change on me once already, and that's the<br>
probably the reason. Unlike my laptop, my HGW (a ZyXEL P2812) sends<br>
RELEASE once its WAN port goes down, and starts the DHCPv6 client state<br>
machine from scratch (with SOLICIT) once it comes back up. So I guess<br>
that would mean it's a coin's toss whether I get back the same prefix I<br>
had before, or if I get the prefix offered by the other DHCPv6 server.<br>
Which is rather problematic, as the ZyXEL doesn't handle LAN renumbering<br>
very well, so I get left with stale and non-working addresses from the<br>
old prefix on the hosts.<br></blockquote><div>[jjmb] you should get your PD renewed, your operator may have to tweak some CNR settings. CNR has great support for IPv6. I worked with that team (include Bernie) over 6 years ago to help put it there. </div>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<br>
Currently I only get only one ADVERTISE message though, so perhaps<br>
they're working on improving this as we speak.<br></blockquote><div>[jjmb] perhaps or they have a separate, single server for IPv6. </div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<br>
BTW, I found draft-ietf-dhc-dhcpv6-redundancy-consider-02, very useful<br>
work that I'll pass along to my provider, thanks!<br></blockquote><div>[jjmb] yup that is what they should use, I do. </div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<br>
Best regards,<br>
<span class="HOEnZb"><font color="#888888">--<br>
Tore Anderson<br>
Redpill Linpro AS - <a href="http://www.redpill-linpro.com/" target="_blank">http://www.redpill-linpro.com/</a><br>
</font></span></blockquote></div><br><br clear="all"><div><br></div>-- <br>===================================<br>John Jason Brzozowski<br>===================================<br>