January 2013 - luv-main

RE: gogo6 and reverse dns
by Tony Langdon 14 Jan '13

14 Jan '13

At 03:50 PM 1/14/2013, James Harper wrote: >Happens more commonly now when virtual machines are incorrectly >cloned, and yeah it's really strange the first time you see it. >looking through the arpwatch logs lets you know what's going on >pretty quickly though. Yep, cloned VMs can certainly cause duplicate MAC addresses on their virtual Ethernet interfaces. Haven't had that issue, because I run VMware, and it is good at detecting when you've moved or copied a VM, and recommends you to say "I copied this VM" if you're not sure. I was debugging the MAC address issue over 10 years ago on a mostly Windows network. We had some IP, as well as Novell IPX/SPX, and a couple of Linux boxes, mostly (all?) in the DMZ, which wouldn't have helped with the troubleshooting. I had to logically deduce what was going on, and duplicate MAC addresses ended up being the only logical possibility (which was proved), after checking that the (Windows) DHCP server was working correctly and ruling out other possibilities. 73 de VK3JED / VK3IRL http://vkradio.com

1 0

RE: gogo6 and reverse dns
by Tony Langdon 14 Jan '13

14 Jan '13

At 02:53 PM 1/14/2013, James Harper wrote: >70 trillion possible vendor allocated MAC addresses (46 bits), and >currently 7 billion people on earth. 10000 each. I suspect that will >be enough for now, but they never get reclaimed (AFAIK) so they >won't last forever. And there are some duplicates running around. Shouldn't be, but I have seen duplicate MAC addresses in the real world. It was only through detailed troubleshooting of some weird network issues that I discovered this. :) >This article discusses some of the merits of the 64 bit subnet >address - http://etherealmind.com/allocating-64-wasteful-ipv6-not/. >I almost stopped reading when I read that "IPv6 addresses are 296 >times more numerous than IPv4 addresses" until I realised that they meant 2^96. > >A lot of these arguments end in the circular statement that "subnets >are 64 bits because SLAAC is 64 bits", so I'm yet to be convinced. Agree, the reasoning is very circular. I'm not convinced either, and I'm sure usage changes down the track will see changes in addressing and routing policies, just as happened with IPv4 over the years. 73 de VK3JED / VK3IRL http://vkradio.com

2 1

Re: New Motherboard/System Selection
by zlinw＠mcmedia.com.au 14 Jan '13

14 Jan '13

>> The OCZ Vector is getting excellent reviews too. $289 for 256GB. >I've heard that OCZ should be avoided, wish I had a better reference, >but the guy (tech guy at Centrecom) said go with Intel ... I mentioned >Samsung, he said, yes, either of those two, but NOT OCZ. In fact he >told my friend that OCZ was so bad that he would de-friend him if he >chose one. I purchased sometime back a pair of OCZ 128g Vertex 4 drives under a recommendation from a salesman of long aquantence. While once installed the drive works OK, the first drive installed did some __EXTREMELY__ strange stuff on start up. Effectively delaying the boot up by minutes. Had to switch the system off twice to get it working. So the second drive has been dumped so if anyone wants it to play with you are quite welcome to it. I have since gone with IBM SSD drives although Samsung are getting some good writeups one review saying they actual make there own SSD chips unlike allmost every one else. Lindsay

4 4

RE: gogo6 and reverse dns
by Tony Langdon 13 Jan '13

13 Jan '13

At 01:29 PM 1/13/2013, James Harper wrote: > > I had a good look last night, and there's not a lot of options. > >Thanks for taking the time to do that. You're welcome. I've been wanting to put my VPS in Adelaide on a reasonable IPv6 link for a while. My US one is covered by he.net (rock solid) with a manually configured tunnel, but wanting an option for .au. > > Gogo6 no longer has a Sydney PoP. Aarnet's > > tunnel broker is still running, but finding a > > compatible client is tough these days (the > > current gogoc does not work with it). > >I'm using gogoc from Wheezy and it works just fine as a client for >aarent. I remember having to modify the scripts for gw6c (gogoc >replaces this package) and can't remember if I had to do the same >modifications for gogoc. And I can't remember what I modified and >why offhand. If anyone wants to use the aarnet broken and can't I >can dig this up. I couldn't get gogoc to work last night. I modified the configuration and it complained about protocol version issues. I downloaded gogoc from gogo6 and compiled it on the box. >It's amazing that these seem to be the only ones doing it after so >long. Telstra Business Broadband (was Internet Direct) says it's >coming soon for their ADSL tails, but it's been that way for a while. Yep, would have thought someone other than Internode would be offering IPv6 by now. Internode IPv6 is rock solid. Only times I notice IPv6 is either if I can be bothered checking what IP I'm connecting to, or when something screwy happens. Had a good one last week. Several people complained a site wasn't working, but I never had any issues. Turned out the site was IPv6 capable, but there was a DNS screwup with the IPv4 RRs, so only IPv4 users were affected, and I had no issues. :-D > > 2. Aarnet (if you can find the right tspc version, no reverse DNS). > >As above, I'm doing this already. Great except the reverse DNS is a >show stopper now with Comcast and probably others. Bummer. :( > > 3. IPV6 Now (free version has dynamic IPv6 and no rDNS delegation). > >I'll look into this. To get what you want, you'd have to go to a paid service. If my server was part of a money making concern, I'd go this route, but it isn't. At this stage, SixXS via New Caledonia looks like the best of a bad lot for me. :) Latency isn't too severe (35-40 mS from Adelaide and 50 ish mS from my DSL connection here), and their PoP is lightly loaded (6 tunnels, 1 routed subnet). 73 de VK3JED / VK3IRL http://vkradio.com

1 0

Re: gogo6 and reverse dns
by Jeremy Visser 13 Jan '13

13 Jan '13

On Sun, 2013-01-13 at 07:54 +1100, Tony Langdon wrote: > The practical options for those of us in .au seem to be: > > 1. Internode (by far the best option, as you get reliable native IPv6 > and reverse DNS delegation). > 2. Aarnet (if you can find the right tspc version, no reverse DNS). > 3. IPV6 Now (free version has dynamic IPv6 and no rDNS delegation). > 4. SixXS (nearest PoP is in New Caledonia, which doesn't have too > severe latency). Or if you live around the WISP where I work at (Southern Highlands region, NSW) you can get native IPv6 as well (just need to pop an extra line into the RADIUS response). Only took me a couple afternoons worth of work to deploy (this is a very small scale setup, mind). (Seriously, deploying IPv6 is drop dead easy. It’s the huge level of ignorance, not technical problems, that is the greatest blocker when it comes to deployment.)

1 0

Re: gogo6 and reverse dns
by hannah commodore 13 Jan '13

13 Jan '13

you can also use the 6to4 method which uses a generic encapsulation method and routes to the nearest 6to4 router via ipv4 anycast. Pipenetworks and a few other AU ISPs run these gateways. http://en.wikipedia.org/wiki/6to4 it's also mostly trivial to set up in Linux, esp Debian based ones: http://wiki.debian.org/DebianIPv6#IPv6_6to4_Configuration Before I had native v6, this was my preferred method. Latency, reliability and setup is much better than userspace driven tunnels. It will give a static subnet if your v4 address is also static. However there is no mechanism for ip6.in-addr.arpa delegation. On 13/01/2013, at 7:54, Tony Langdon <vk3jed(a)gmail.com> wrote: > At 12:22 AM 1/13/2013, Jeremy Visser wrote: >> On Sat, 2013-01-12 at 01:59 +0000, James Harper >> wrote: > Are there any other options for tunnels >> these days? My ISP keeps > telling me that IPv6 >> is coming, but that's been the case for a while. >> Vote with your wallet. Internode have had native >> IPv6 for years now and it’s not going away any >> time soon. >> _______________________________________________ >> luv-main mailing list luv-main(a)luv.asn.au >> http://lists.luv.asn.au/listinfo/luv-main > > I had a good look last night, and there's not a lot of options. > > Gogo6 no longer has a Sydney PoP. Aarnet's > tunnel broker is still running, but finding a > compatible client is tough these days (the > current gogoc does not work with it). There is > an Australian provider (IPv6 Now), but you either > have to put up with a no frills free tunnel > (dynamic IPv6), or pay from $20/month (at least you get a SLA). > > The practical options for those of us in .au seem to be: > > 1. Internode (by far the best option, as you get > reliable native IPv6 and reverse DNS delegation). > 2. Aarnet (if you can find the right tspc version, no reverse DNS). > 3. IPV6 Now (free version has dynamic IPv6 and no rDNS delegation). > 4. SixXS (nearest PoP is in New Caledonia, which > doesn't have too severe latency). > > Anything else has severe latency, due to distance > from PoPs. It's a pity Hurricane Electric > (he.net) don't have a PoP in .au, as their tunnel > broker is rock solid. I use them to provide IPv6 > for a VPS in the US, and the latency over IPv6 > from here is actually less than IPv4. > > > 73 de VK3JED / VK3IRL > http://vkradio.com > > _______________________________________________ > luv-main mailing list > luv-main(a)luv.asn.au > http://lists.luv.asn.au/listinfo/luv-main

3 3

RE: gogo6 and reverse dns
by James Harper 13 Jan '13

13 Jan '13

> I had a good look last night, and there's not a lot of options. Thanks for taking the time to do that. > Gogo6 no longer has a Sydney PoP. Aarnet's > tunnel broker is still running, but finding a > compatible client is tough these days (the > current gogoc does not work with it). I'm using gogoc from Wheezy and it works just fine as a client for aarent. I remember having to modify the scripts for gw6c (gogoc replaces this package) and can't remember if I had to do the same modifications for gogoc. And I can't remember what I modified and why offhand. If anyone wants to use the aarnet broken and can't I can dig this up. > There is > an Australian provider (IPv6 Now), but you either > have to put up with a no frills free tunnel > (dynamic IPv6), or pay from $20/month (at least you get a SLA). > > The practical options for those of us in .au seem to be: > > 1. Internode (by far the best option, as you get > reliable native IPv6 and reverse DNS delegation). It's amazing that these seem to be the only ones doing it after so long. Telstra Business Broadband (was Internet Direct) says it's coming soon for their ADSL tails, but it's been that way for a while. > 2. Aarnet (if you can find the right tspc version, no reverse DNS). As above, I'm doing this already. Great except the reverse DNS is a show stopper now with Comcast and probably others. > 3. IPV6 Now (free version has dynamic IPv6 and no rDNS delegation). I'll look into this. Thanks again. James

1 0

gogo6 and reverse dns
by James Harper 12 Jan '13

12 Jan '13

Is anyone else using gogo6 with reverse dns? I've set dns_server in my config file but it's not being delegated. My prefix is 2001:388:e000:700::/56, but the dns resolution stops beyond 2001:388:e000:: (e.8.8.3.0.1.0.0.2.ip6.arpa), which resolves to ns[123].aarnet.net.au: > nslookup -q=ns e.8.8.3.0.1.0.0.2.ip6.arpa Server: 127.0.0.1 Address: 127.0.0.1#53 Non-authoritative answer: e.8.8.3.0.1.0.0.2.ip6.arpa nameserver = ns1.aarnet.net.au. e.8.8.3.0.1.0.0.2.ip6.arpa nameserver = ns3.aarnet.net.au. e.8.8.3.0.1.0.0.2.ip6.arpa nameserver = ns2.aarnet.net.au. anything beyond that is NXDOMAIN. I'm pretty sure the problem is not my end, but is anyone else doing this? Are there any other options for tunnels these days? My ISP keeps telling me that IPv6 is coming, but that's been the case for a while. Thanks James

4 4

CPU limiting or similar of an application
by Carl Turney 11 Jan '13

11 Jan '13

Hi All, Running Thunderbird 15.0.1 on Ubuntu 10.4 (Please don't suggest changing my email client or Linux to your current favourites.) Thunderbird is doing a major re-indexing of messages, which is really pushing my CPU to its limits. (i.e. getting over 60C core temperature, email process using 100-160% of CPU usage - dual core CPU) Full details of my hardware, and the CPU usage are documented here: http://forums.mozillazine.org/viewtopic.php?f=31&t=2399189 That was this time last year. Doing the same thing now with my updated version of TB. (Only happens for a couple days, once a year, when I shift all my Sent messages of the previous calendar year to an "archive" folder.) Could any of you point me to instructions to get Ubuntu to limit or choke the demand that the Thunderbird process calls upon the CPU? Thanks =very= much. Carl Turney Bayswater

10 17

UPS and Linux
by Brian May 10 Jan '13

10 Jan '13

Hello, I have a Powerware PowerRite XT (PRXT0600A), which I am attempting to configure with nut over RS232, to allow for clean shut downs. However, so far I haven't had any luck trying to talk to it, or work out what language it speaks even. Its like it I forgot to plug it in in fact, I am not getting any response to anything. Is there any hope? Or should I be looking at getting a newer UPS that I know will work with nut? Thanks -- Brian May <brian(a)microcomaustralia.com.au>

7 16