Big props to the list membership

[Pete Mundy]

Hi Loernzo

No bug filed because I wasn't sure it was actually a bug. I figured it could just as easily have been something caused by other configuration changes I had made over time. To be sure it was a bug I'd need to first set up a box with factory settings and replicate the fault, and after the time I put in today getting my setup working, that further step fell into the 'too hard' bin.

I shouldn't be so lazy ;)

In answer to your second question; no and so hence the latter.

Pete
	

> On 27/04/2016, at 2:18 pm, Lorenzo Colitti <lorenzo at google.com> wrote:
> 
> Pete,
> 
> Did you file a bug on openwrt? My openwrt device here announces its ULA address, but I think it does reply on that address.
> 
> Were you able to configure the ISP DNS servers using luci, or did you hardcode them in the configuration file?
> 
> Cheers,
> Lorenzo
> 
> On Wed, Apr 27, 2016 at 11:11 AM, Pete Mundy <pete at mac.geek.nz <mailto:pete at mac.geek.nz>> wrote:
> Dear ipv6-ops list members,
> 
> I just wanted to send a big props to you guys for the robust discussion on the Marshmallow problem that Eric reported wrt slow web-page loading when v6 is enabled. It found myself bursting into laugher reading Tim's replies (specifically the one including the phrase 'jammin on the jim jam frippen on the krotz') and decided right there and then that bugger it, I need to get to the bottom of the same problem that was happening here.
> 
> I had last week committed the cardinal sin of disabling v6 on my CPE (yes barely a router, Jeroen) to get around exactly the same symptoms on my Masrhmallow device. So today I spent no less than six (6!) hours digging down to the bottom of it all using the combined knowledge I had gained, tcpdump, a whole bunch of RTFM and many many binary tests.
> 
> To cut a long story short, my OpenWRT CPE was assigning it's LAN ULA v6 IP via RDNSS, but it wasn't responding to any DNS queries sent to that address. So DNS was borked for v6 queriers and the Marshmallow device wasn't elegantly routing around the damage like all the other hosts on my (W)LAN were. A similar run of events to those experienced by the ISP customers Eric reported.
> 
> The eventual work-around was to manually configure my ISP's (working :) v6 DNS resolver IPs into the odhcpd configuration.
> 
> So thanks everyone for your entertaining and informative discussions. Those, coupled with a 1/2 day of my time have provided the pleasant outcome of having v6 enabled again and all systems working :)
> 
> Pete Mundy
> Nelson, New Zealand

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