Thunderbird and dual-stack servers

cconn

Full Member

Posts: 128

Thunderbird and dual-stack servers

« on: January 11, 2012, 02:58:42 pm »

I am using Thunderbird to access IMAP on a dual-stacked host, and for some reason it seems to always choose IPv4 over IPv6. From the commandline I always seem to resolve a IPv6 address for ping/tracert, yet Thunderbird never bothers to try it. I ended up making a v6-only hostname for the IMAP server in order to test.

Is there a hidden option somewhere to set preference of v6 over v4 in Thunderbird?


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cholzhauer

Hero Member

Posts: 2094

Re: Thunderbird and dual-stack servers

« Reply #1 on: January 11, 2012, 03:17:39 pm »

Ive never seen one, but again I guess I haven't looked either. I assume you're using the latest version?


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cconn

Full Member

Posts: 128

Re: Thunderbird and dual-stack servers

« Reply #2 on: January 11, 2012, 03:25:27 pm »

using Thunderbird 8.0 actually, just upgraded to 9.0.1. It auto-updates now and then, strange that I would be what appears to be quite a bit behind, I didn't bother to check.

Going to switch back to the dual-stack hostname and see what it chooses.


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broquea

Senior Network Engineer, SEVEN Networks (AS19733)
Hero Member

Posts: 1389

Re: Thunderbird and dual-stack servers

« Reply #3 on: January 11, 2012, 03:31:11 pm »

I checked on my win7 and linux machines, and they are all preferring ipv6 talking to a dual-stack server. Don't really see an option to prefer one over another.


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adiblol

Newbie

Posts: 6

Re: Thunderbird and dual-stack servers

« Reply #4 on: January 11, 2012, 04:43:36 pm »

See /etc/gai.conf


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cconn

Full Member

Posts: 128

Re: Thunderbird and dual-stack servers

« Reply #5 on: January 12, 2012, 07:38:43 am »

must have been due to the fact I was running 8.0 since it seems to reliably connect on the v6 address now. Sorry for the noise Angry


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