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tramp ControlMaster options (was: Re: package.el: what does package "Che
From: |
Yuri D'Elia |
Subject: |
tramp ControlMaster options (was: Re: package.el: what does package "Checking ... " actually do?) |
Date: |
Sat, 18 Jul 2015 14:44:11 +0200 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Icedove/38.0 |
On 18/07/15 13:22, Yuri D'Elia wrote:
> On 17/07/15 13:11, Yuri D'Elia wrote:
>> When I'm using a high-latency network connection, and I update some
>> packages, downloading takes a few seconds after the connection is
>> initiated, but package "Checking" instead takes literally minutes to
>> complete.
>
> Turns out, it's another case of:
>
> https://debbugs.gnu.org/cgi/bugreport.cgi?bug=20015
It's really that bad. Even bringing out the variable description of
tramp-ssh-controlmaster-options hangs.
The issue is caused by a rogue provider's DNS server responding with
NXDOMAIN but valid IN A record, which ssh still tries to connect to. And
since the host is filtered, this takes minutes to time out.
Considering that I have a global setting in my ~/.ssh/config that
enables ControlMaster/ControlPath globally, I consider this as a regression.
I tried the same probes using:
ssh -o BatchMode=yes [various flags] 0.0.0.0
and I get comparable output, and there's no chance 0.0.0.0 would be a
valid address.
- package.el: what does package "Checking ... " actually do?, Yuri D'Elia, 2015/07/17
- Re: package.el: what does package "Checking ... " actually do?, Artur Malabarba, 2015/07/17
- Re: package.el: what does package "Checking ... " actually do?, Yuri D'Elia, 2015/07/18
- tramp ControlMaster options (was: Re: package.el: what does package "Checking ... " actually do?),
Yuri D'Elia <=
- Message not available
- Re: tramp ControlMaster options, Michael Albinus, 2015/07/20
- Re: tramp ControlMaster options, Thierry Volpiatto, 2015/07/20
- Re: tramp ControlMaster options, Yuri D'Elia, 2015/07/20
- Re: tramp ControlMaster options, Michael Albinus, 2015/07/20
- Re: tramp ControlMaster options, Yuri D'Elia, 2015/07/20
- Re: tramp ControlMaster options, Thierry Volpiatto, 2015/07/21
- Re: tramp ControlMaster options, Michael Albinus, 2015/07/21
- Re: tramp ControlMaster options, Thierry Volpiatto, 2015/07/21
- Re: tramp ControlMaster options, Yuri D'Elia, 2015/07/21
- Re: tramp ControlMaster options, Michael Albinus, 2015/07/22