Re: ssh hangs for 5 seconds for a particular machine
On 2015-04-09 00:09:08 +0200, Vincent Lefevre wrote:
> According to
>
> https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=414569
> "avahi-daemon: delay on resolving IP addresses when mdns is
> specified in /etc/nsswitch.conf"
>
> the 5-second delay shouldn't occur, as this bug was fixed with the
> changelog:
>
> * On new installations, do not add "mdns4" to nsswitch.conf, only
> "mdns4_minimal [NOTFOUND=return]". This means we can't
> perform reverse DNS using mDNS for addresses outside 169.254.x.x and
> fe80::/10, but avoids a 5 second delay if such addresses do not
> have a PTR record in DNS (Closes: #412714, #414569, #561622 for
> new installations).
>
> The "mdns4" in my /etc/nsswitch.conf file occurs after
> "mdns4_minimal [NOTFOUND=return]" so that I don't see why I get
> the delay.
Perhaps I misunderstood the exact behavior. I've applied the solution
suggested by:
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=414569#49
i.e. adding "[NOTFOUND=return]" after "dns" in /etc/nsswitch.conf,
to have:
hosts: files mdns4_minimal [NOTFOUND=return] dns [NOTFOUND=return] mdns4
--
Vincent Lefèvre <vincent@vinc17.net> - Web: <https://www.vinc17.net/>
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Work: CR INRIA - computer arithmetic / AriC project (LIP, ENS-Lyon)
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