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Message-ID: <1ef94f9fb4b10df8416e630e1dab988842dc84bf.camel@sent.com>
Subject: Re: [alpine-user] Support request - Force DNS requests to go over
 TCP
From: Paul Bredbury <brebs@sent.com>
To: Richard Tweed <rtweed@thoughtmachine.net>, 
	alpine-user@lists.alpinelinux.org
Date: Sat, 13 Apr 2019 10:40:39 +0100
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For any non-trivial DNS, I recommend to use Unbound.

If you really need TCP, it has an option:

tcp-upstream: <yes or no>  
Enable or disable whether the upstream queries use TCP only for transport. Default is no. Useful in tunneling scenarios.

On Fri, 2019-04-12 at 14:00 +0100, Richard Tweed wrote:
> I've run into a situation where I need DNS resolution to always be over TCP rather than UDP due to AWS dropping DNS packets frequently enough to be a problem. On glibc based environments I can use
> the use-vc option in the resolv.conf file. 
> http://man7.org/linux/man-pages/man5/resolv.conf.5.html
> On Alpine this doesn't seem to be supported and I would love to hear any suggestions about achieving this behaviour.



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