Comments on Matt's blog: Enabling IPv6 Privacy Addresses

@Drew, great, good to hear ;) @Vincent Bernat: Ri...

2011-12-15T21:02:59.656-05:00

@Drew, great, good to hear ;)

@Vincent Bernat: Right, I had gotten that part for IPv4, but IPv6 does seem to be handled differently. What's for sure is that this behaviour would be consistent with that of at least net.ipv6.conf.all.disable_ipv6, for what that's worth. It also doesn't seem to be using the values from ....all.* in any way, really, if I read net/ipv6/addrconf.c right. My point is, there has to be something that works; and right now, neither option does. See also the message I sent on linux-netdev to that effect (I never got any response...): http://marc.info/?l=linux-netdev&m=132285083905998&w=4

This is not how "all" and "default&...

2011-12-15T14:28:43.077-05:00

This is not how "all" and "default" settings work. "default" is the value used when a new interface appears. "all" is not propagated to existing interfaces but the actual value for an interface is the value of the interface AND/OR/MAX the value of "all". For example, for rp_filter, this is max(interface, all). You can see this is include/linux/inetdevice.h. For IPv6, there seems to have something different.

Naw, 11.10 is the only one of the latest batch of ...

2011-12-15T14:23:04.146-05:00

Naw, 11.10 is the only one of the latest batch of updates (the "batch" including Fedora 14-16 and openSUSE 12.1) that DIDN'T have any problems (and I hope it stays that way) ;)

Drew, Well, the issue there might be caused by yo...

2011-12-15T14:07:53.745-05:00

Drew,

Well, the issue there might be caused by your router, unfortunately. Some models have been known to cause issues in the past with IPv6, maybe it's still the case. The jist of the problem was that DNS resolution would be affected (requests would be dropped).

However, if you're now on Oneiric, you should already see this being a problem if it's the cause. Oneiric already has IPv6 enabled by default in NetworkManager, all I'm talking about here is enabling a special function that increases privacy.

Normally, IPv6 shouldn't make a difference on a healthy, well-designed network: we've roughly proven that by the fact that really nothing much happened on IPv6 day, last June. So if you're already running Oneiric and running into issues... Please let us know about them; bug reports are great for that. And if you want to help out with testing, it's obvious that running an virtual machine with Precise (or a live CD) if you can get IPv6 connectivity is great help. Either way, we want to know if you run into issues ;)

I'm still trying to figure out IPv6 but I do k...

2011-12-15T13:04:34.056-05:00

I'm still trying to figure out IPv6 but I do know that in Fedora and openSUSE before I could browse the internet I had to go and turn off or blacklist IPv6. Ubuntu was the only one that didn't initially have this set so I was able to go online out-of-the-box.

So whatever is done, please don't make it so we have to jump through hoops to get a browser (and other online services) working!