[AusNOG] IPv6: Who's dual stacked? Why don't I look stacked?

[Chris Jones]

On 08/03/2013, at 8:11 AM, Don Gould <don at bowenvale.co.nz> wrote:

> Why don't my email headers suggest I'm dual stacked?
> 
> 
> thinkdesignprint.co.nz>_ ~# ifconfig
> eth0      Link encap:Ethernet  HWaddr 00:00:20:01:85:02
>          inet addr:117.121.243.25  Bcast:117.121.243.255 Mask:255.255.255.0
>          inet6 addr: 2403:cc00:1000:0:200:20ff:fe01:8502/64 Scope:Global
>          inet6 addr: fe80::200:20ff:fe01:8502/64 Scope:Link
> 
> 
> I've got an IPv6 address on my server but it doesn't look like my mail application is using it if you look at the headers in this message.

From the looks of your headers you're using Postfix - look at the inet_protocols setting.

chrisj at mail1:~$ sudo postconf inet_protocols
inet_protocols = all

http://www.postfix.org/IPV6_README.html#configuration

Regards,

Chris

> I discovered this because I thought it might be interesting to have a bit of a look at my favourite lists and see how we're going in industry for dual stacking.
> 
> On 8/03/2013 9:34 a.m., Mark Smith wrote:
> > Your sarcasm is obvious, and clearly you're the horse that doesn't want to drink water.
> 
> Mark's comments were fear enough this morning.
> 
> If he's bothered to take just 10 seconds to have a look at my message headers, it's no wonder he'd be thinking I'm just yanking the chain.
> 
> I dual stacked that VPS 18 months ago, but it seems it's not playing the game.
> 
> It's no wonder that we're only seeing 1% traffic if the traffic isn't flowing.
> 
> D
> 
> 
> FYI for Friday fun...
> 
> GOOD
> canonical name 	lists.ausnog.net.
> aliases 	
> addresses 	2407:9000:3::9
> 203.161.158.9
> 
> BAD
> canonical name 	list.waikato.ac.nz.
> aliases 	
> addresses 	130.217.66.63
> 
> BAD
> canonical name 	forums.whirlpool.net.au.
> aliases 	
> addresses 	117.53.166.22
> 
> BAD
> canonical name 	geekzone.co.nz.
> aliases 	
> addresses 	202.175.128.169
> 202.175.128.164
> 
> GOOD
> www.nznog.org
> canonical name 	ghs.googlehosted.com.
> aliases 	
> addresses 	2607:f8b0:4003:c02::79
> 173.194.64.121
> 
> Source:  www.domainwhitepages.com
> -- 
> Don Gould
> 31 Acheson Ave
> Mairehau
> Christchurch, New Zealand
> Ph: + 64 3 348 7235
> Mobile: + 64 21 114 0699
> 
> _______________________________________________
> AusNOG mailing list
> AusNOG at lists.ausnog.net
> http://lists.ausnog.net/mailman/listinfo/ausnog

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