Re: Why used DHCPv6 when RA has RDNSS and DNSSL?

On Tue, Mar 31, 2020 at 02:30:46AM +0200, Roger Wiklund wrote: >Hi >I played around with IPv6 on my Mac today (Mac OS Catalina) and I noticed >that besides the IP from DHCPv6 (dynamic) it's also generating two other >addresses. [...] >I don't really know that the "secured"

Re: Cloudflare (AS13335) broken - only on IPv6?

Hi, an update: On Thu, Jan 24, 2019 at 02:22:39PM +0100, ignat...@cs.uni-bonn.de wrote: > we've got reports that > > - repo.anaconda.com (104.17.N.77, 2606:4700::ip.v4.adr.ess) > > (and later: > - www.zabbix.com (104.24.10[23].152, 2606:4700:30::6818:6[6]98) > - www.thunderbird.net

Re: MTU/MSS testing IPv6

On Fri, Apr 29, 2016 at 08:30:50AM +0200, Mikael Abrahamsson wrote: > > Hi, > > I've run into a scenario where a website doesn't seem to be listening to > PTB. I can reach them just fine from an MTU1500 clean IPv6 connection, but > if I reach from a MTU1500<->MTU1480<->MTU1500 connection, it

Re: wake on lan / wol with linux in IPv6-LAN (without IPv4)

On Tue, Sep 16, 2014 at 08:16:06PM +0100, Tom Hill wrote: > On 16/09/14 13:34, Bj?rn Mork wrote: > > This depends on all-stations multicast being forwarded to inactive > > ports. If it works with your switches, then fine. But I don't think you > > can assume it works everywhere. > > I'd be quite

Re: test-ipv6.com out of service?

Hm: On Thu, Nov 12, 2015 at 01:16:51PM +0100, Thomas Schäfer wrote: > > is the this site down? > > http://test-ipv6.com/ > > Some minutes ago it displayed wrong test results. Now it seems to me it is > down. TOMEETOO on a related note: it doesn't have any IPv6 resolution anymore:

Re: IPv6-misconfigurations

On Mon, Sep 28, 2015 at 07:17:41AM -0700, Ca By wrote: > On Mon, Sep 28, 2015 at 6:57 AM, Thomas Schäfer > wrote: > > Generally speaking, it is better to have no IPv6 access than broken IPv6. > Famous old words.[2] -is [2]

Re: SV: Samsung phones block WiFi IPv6 when sleeping, delayed notifications

Hi, On Thu, Jun 11, 2015 at 09:56:45AM +, Benedikt Stockebrand wrote: As far as tweaking these values to deal with some sleepy devices is concerned: I'd personally prefer to consider these devices broken; they should at least send an RS when they wake up and ensure their configuration is

Re: Google no longer returning AAAA records?

Hi, On Thu, Apr 16, 2015 at 10:56:38PM -0700, Doug Barton wrote: On 4/16/15 10:22 PM, Frank Habicht wrote: Hi, On 4/17/2015 6:45 AM, Erik Kline wrote: On Fri, Apr 17, 2015 at 12:28 PM, Brian E Carpenter But the incentive is wrong. Forcing users to drop back to IPv4 offers no incentive to

Re: Why do we still need IPv4 when we are migrating to IPv6...

On Thu, Feb 12, 2015 at 10:00:21AM +0100, Ole Troan wrote: So, any thoughts on this topic, and any qualified guesses on when we no longer need to do IPv4 and still be able to call our internet product premium? When will IPv6 provide me as an end-user with more value than what my

Re: Why do we still need IPv4 when we are migrating to IPv6...

On Thu, Feb 12, 2015 at 10:41:05AM +0100, Ole Troan wrote: But that's better value by making IPv4 work less good. and I'll postulate that we can make A+P / shared IPv4 work good enough that end-users who are trained to live behind a NATs will not notice. You mean, trained to see their

Re: Cloudflare IPv6 folks

On Mon, Jan 12, 2015 at 04:46:03PM -0500, Paul Timmins wrote: I'm having problems that are getting debugged uselessly that seem to tie to IPv6. Can someone hit ticket 301481 and hit me back offlist? In case this is of interest: I've reported to n...@cloudflare.com that they have a PMTUd hole,

Re: google path mtu?

Hi, On Fri, Jan 23, 2015 at 07:32:47AM +0100, Tore Anderson wrote: * Mikael Abrahamsson swm...@swm.pp.se So I guess the problem this time was some Google servers sending me PTB=1280 and then Chrome not taking this into account when sending UDP packets when using QUIC, resulting in

Re: google path mtu?

Hi, On Mon, Jan 26, 2015 at 10:47:51AM +0100, Mikael Abrahamsson wrote: On Sat, 24 Jan 2015, Andras Toth wrote: Airport Express is setting the IPv6 Tunnel MTU to 1280 in all cases and it's not configurable, as far as I'm aware. That is what I have discovered. So the HE.net tunnel

Re: google path mtu?

Hi, On Tue, Jan 20, 2015 at 03:40:23PM +0100, Marco d'Itri wrote: On Jan 20, Mikael Abrahamsson swm...@swm.pp.se wrote: I turned off my IPv6 HE.net tunnel yesterday because family was complaining about Youtube not working. I haven't enabled it again. Other people who had problems, are

Re: google path mtu?

On Mon, Jan 19, 2015 at 10:13:25AM +, Alec Edworthy wrote: On 19/01/2015 10:06, Ignatios Souvatzis wrote: Hi, there seems to be something that smells of a path mtu problem reaching google servers from here[1]... (first-hop of the University's external link is a short tunnel

Re: Clueless national monopoly providers

On Fri, Oct 10, 2014 at 03:08:43PM +0100, Tim Chown wrote: On 10 Oct 2014, at 15:01, Phil Mayers p.may...@imperial.ac.uk wrote: On 10/10/14 14:50, Bjoern A. Zeeb wrote: % telnet -4 www.bt.com 80 Trying 62.239.186.73... Connected to www.bt.com. Escape character is '^]'. GET /

Re: wake on lan / wol with linux in IPv6-LAN (without IPv4)

Hi, On Sun, Sep 21, 2014 at 08:01:49PM +0100, Tom Hill wrote: On 17/09/14 11:07, Ignatios Souvatzis wrote: In IPv6, the data forwarding rules are more straight forward because MLD is mandated for addresses with scope 2 (link-scope) or greater. The only exception is the address

MTU Problem: Akamai,HE,GTT

it would be more helpful if the real problem would be fixed. Regards, Ignatios Souvatzis

Re: wake on lan / wol with linux in IPv6-LAN (without IPv4)

Hi, On Wed, Sep 17, 2014 at 10:14:31AM +0200, Mikael Abrahamsson wrote: So, one interpretation would be that if the device hasn't subscribed to the all IPv6 nodes multicast group, it's not an IPv6 node, and shouldn't receive the traffic. Uh, no. the link-local stuff must never be snooped

Re: wake on lan / wol with linux in IPv6-LAN (without IPv4)

On Wed, Sep 17, 2014 at 11:59:55AM +0200, Ignatios Souvatzis wrote: Hi, On Wed, Sep 17, 2014 at 10:14:31AM +0200, Mikael Abrahamsson wrote: So, one interpretation would be that if the device hasn't subscribed to the all IPv6 nodes multicast group, it's not an IPv6 node, and shouldn't

Re: wake on lan / wol with linux in IPv6-LAN (without IPv4)

On Mon, Sep 15, 2014 at 07:46:04PM +0200, Thomas Schäfer wrote: I am still looking for an IPv6-wol (without mono) I suspect that sending to the all-stations multicast would work, wouldn't it? The hardware detects the magic pattern anywhere in the packet. Thinking about it - it should work

Re: Poll on SMTP over IPv6 Usage

On Mon, Feb 17, 2014 at 03:37:28PM +, Nick Hilliard wrote: On 17/02/2014 15:16, Ignatios Souvatzis wrote: Not necessarily. All I'd imagine to do with I should maybe have added: e-mail over UUCP can be done with postfix and maybe transport tables; I've run a connection that way

Re: Poll on SMTP over IPv6 Usage

On Thu, Feb 13, 2014 at 03:23:21PM -0500, James Small wrote: Interested in what you're using to send/receive SMTP over IPv6: A) Using (product) from __ (vendor) three systems where I'm (partially) responsible 1. A) Using postfix from NetBSD 2. partially A) (clients to

Re: show ipv6 destination cache on BSD host

On Thu, Jan 30, 2014 at 09:20:18PM +0100, Matjaz Straus Istenic wrote: On 30. jan. 2014, at 21:13, Nick Hilliard n...@inex.ie wrote: ndp -an Well, this is for local IPv6 ND cache only. I'm looking for a command to display the _destination_ cache in order to check for changed Path MTU.

Re: Amount of announced IPv4-space by ASN not announcing IPv6?

On Tue, Aug 13, 2013 at 08:49:54PM +0200, Martin Millnert wrote: We still have the last big problem with access enablement (how many NRENs have member universities with access-enabled IPv6?), and CPEs. In Germany, about 1.01 or 2.01 (the .01 being my part of my department), to my knowledge.

Re: teredo.ipv6.microsoft.com off?

Hello, On Tue, Jul 16, 2013 at 09:27:54PM +, Christopher Palmer wrote: I am acking this thread. If there is feedback on the ongoing experiment or our consideration of sunsetting Teredo, do let me know. So far people have been quite enthusiastic. Let me ask one thing... a couple of

Re: teredo.ipv6.microsoft.com off?

On Sat, Jul 13, 2013 at 10:39:12PM +0300, Tassos Chatzithomaoglou wrote: At the same time, i'm thinking out loud... Why would a windows application send an a request to an IPv6 DNS server over native IPv6 in order to find the IPv4 address of a server and get IPv6 over IPv4 connectivity? Why