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Re: [homenet] [DNSOP] Fwd: WGLC on "redact" and "homenet-dot"

"John R Levine" <johnl@taugh.com> Thu, 15 December 2016 00:48 UTC

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Date: Wed, 14 Dec 2016 19:48:08 -0500
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From: John R Levine <johnl@taugh.com>
To: Mark Andrews <marka@isc.org>
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Cc: dnsop@ietf.org, homenet@ietf.org
Subject: Re: [homenet] [DNSOP] Fwd: WGLC on "redact" and "homenet-dot"
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>> application, for .local it's handled by mDNS, and for .localhost it's
>> special cased in the stub client library.
>
> But it isn't.  Go read the library code.  There isn't magic for
> localhost in there. The code looks in /etc/hosts before looking in
> the DNS (normally) if there is a gethostbyname/getaddrinfo etc.
> call.  This allows the administrator to override the DNS for specific
> names on this machine for those calls.  This makes "telnet localhost"
> work.  It doesn't make lots of other stuff that should work succeed.

I'd say that's special case, since nearly every /etc/hosts I've looked at 
only conains an entry for localhost, and perhaps a useless 255.255.255.255 
for broadcasthost.

Regards,
John Levine, johnl@taugh.com, Taughannock Networks, Trumansburg NY
Please consider the environment before reading this e-mail. https://jl.ly

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