From mboxrd@z Thu Jan 1 00:00:00 1970 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on inbox.vuxu.org X-Spam-Level: X-Spam-Status: No, score=-0.8 required=5.0 tests=DKIM_INVALID,DKIM_SIGNED, HTML_MESSAGE,MAILING_LIST_MULTI,MIME_QP_LONG_LINE,RCVD_IN_DNSWL_NONE autolearn=ham autolearn_force=no version=3.4.4 Received: (qmail 13760 invoked from network); 11 Mar 2021 18:31:10 -0000 Received: from minnie.tuhs.org (45.79.103.53) by inbox.vuxu.org with ESMTPUTF8; 11 Mar 2021 18:31:10 -0000 Received: by minnie.tuhs.org (Postfix, from userid 112) id BC7A49BD3E; Fri, 12 Mar 2021 04:31:09 +1000 (AEST) Received: from minnie.tuhs.org (localhost [127.0.0.1]) by minnie.tuhs.org (Postfix) with ESMTP id 5C5949507E; Fri, 12 Mar 2021 04:30:48 +1000 (AEST) Authentication-Results: minnie.tuhs.org; dkim=fail reason="signature verification failed" (2048-bit key; unprotected) header.d=iitbombay-org.20150623.gappssmtp.com header.i=@iitbombay-org.20150623.gappssmtp.com header.b="AIXDWEWp"; dkim-atps=neutral Received: by minnie.tuhs.org (Postfix, from userid 112) id A08E59B550; Fri, 12 Mar 2021 04:30:45 +1000 (AEST) Received: from mail-oi1-f181.google.com (mail-oi1-f181.google.com [209.85.167.181]) by minnie.tuhs.org (Postfix) with ESMTPS id 982EE95074 for ; Fri, 12 Mar 2021 04:30:43 +1000 (AEST) Received: by mail-oi1-f181.google.com with SMTP id u6so16810535oic.2 for ; Thu, 11 Mar 2021 10:30:43 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=iitbombay-org.20150623.gappssmtp.com; s=20150623; h=content-transfer-encoding:from:mime-version:subject:message-id:date :to:cc; bh=OVjfDQJXeeY7g8fSmOXCQwS7N/h+rVLGCnAWJJCEVkY=; b=AIXDWEWpm8Y0aZfba4YmRctkiL3OlGh/i3DP1l36Q8b97LRWqhuPcOOlBrDuL4swqU vaUJ0kHKbXE5Z7OQLUfBOcKOKKBPZpTujhr6aD2C99m646nFWJyDkOVf2d5Rer150sTi nrzTj6bEvAEAjix8jpEvJIEBKA/65UlC+UjwIeI0jg2eTzLMmbJbnZgB/Vsno9LQ21uu A1Jq4gfpCoY8wJ3wgoEiIc0yfqEG8xvfYCrNP+7zQG2AawrXWwt/xteelI1/oewfzUNq n3dEgjUFL82vkfuY+CwXIwWAKSib4fphiwGUY+zLQyeyfY2Mc/dKCIZmMzZDKig8cduE 2c/w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:content-transfer-encoding:from:mime-version :subject:message-id:date:to:cc; bh=OVjfDQJXeeY7g8fSmOXCQwS7N/h+rVLGCnAWJJCEVkY=; b=nDOc/z/Fm2+rxQHdOYQpI+4WiPlG2MnCCIL3WRCJOK3CJ4p+x6/GnHLG9O6F51SiIh 4w+7/zm+6jVHr0b64+gpC9CRDFCPpcKf/PUK54/9A1nhljGm+RprpKfUPJXla9OoKBkQ 8ArqSr7KdLoSMV4KzLG7LIsdwvQsFQEBBX3yhhEUBf/nhPLpwo7XqBbRMyeOUejel4Kr sVaWfb+1FfbGLVV5dmv4Hkb2cFyTPzqTV2IfGIaQjM2o2J6KzZL+3Gfzd1OxWzc0eX1e ehTJ5pbZqAZBbHRK4rRQEOv/lTpXBVAcEzAnVQG6tt+LZga7ev9P1vPkUE5mgMxCsmI9 9Orw== X-Gm-Message-State: AOAM533pNke1F3/gnRo4kOeR30oaOuqq6aE9agwbxYw07QU4xjU0eFon nnhtAhlJ8Or6nLIsUPnyMYMoOQ== X-Google-Smtp-Source: ABdhPJyx920YxRDUJHY0df+hiIreyre3Qse1+AkzNnNUKZykKgc7iQGDP/4JtPBSswCQyRN4AZ/7sg== X-Received: by 2002:aca:5fc5:: with SMTP id t188mr7427330oib.77.1615487442971; Thu, 11 Mar 2021 10:30:42 -0800 (PST) Received: from [192.168.125.16] (107-215-223-229.lightspeed.sntcca.sbcglobal.net. [107.215.223.229]) by smtp.gmail.com with ESMTPSA id l71sm717455oib.30.2021.03.11.10.30.41 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 11 Mar 2021 10:30:41 -0800 (PST) Content-Type: multipart/alternative; boundary=Apple-Mail-4A2A1E0E-63C1-4CA0-966D-E20E9D6F6D4F Content-Transfer-Encoding: 7bit From: Bakul Shah Mime-Version: 1.0 (1.0) Message-Id: Date: Thu, 11 Mar 2021 10:30:40 -0800 To: Warner Losh X-Mailer: iPad Mail (18D52) Subject: Re: [TUHS] [COFF] Pondering the hosts file X-BeenThere: tuhs@minnie.tuhs.org X-Mailman-Version: 2.1.26 Precedence: list List-Id: The Unix Heritage Society mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Internet History , COFF , The Unix Heritage Society , Grant Taylor Errors-To: tuhs-bounces@minnie.tuhs.org Sender: "TUHS" --Apple-Mail-4A2A1E0E-63C1-4CA0-966D-E20E9D6F6D4F Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable On Mar 11, 2021, at 10:08 AM, Warner Losh wrote: >=20 > On Thu, Mar 11, 2021 at 10:40 AM Bakul Shah wrote: >> =46rom https://www.freebsd.org/cgi/man.cgi?hosts(5) >> For each host a single line should be present with the following informat= ion: >> Internet address >> official host name >> aliases >> HISTORY >> The hosts file format appeared in 4.2BSD. >=20 > While this is true wrt the history of FreeBSD/Unix, I'm almost positive th= at BSD didn't invent it. I'm pretty sure it was picked up from the existing h= ost file that was published by sri-nic.arpa before DNS. A different and more verbose format. See RFCs 810 & 952. Possibly because it= had to serve more purposes? > Warner > =20 >>> On Mar 11, 2021, at 9:14 AM, Grant Taylor via TUHS wrote: >>> =EF=BB=BFHi, >>>=20 >>> I'm not sure where this message best fits; TUHS, COFF, or Internet Histo= ry, so please forgive me if this list is not the best location. >>>=20 >>> I'm discussing the hosts file with someone and was wondering if there's a= ny historical documentation around it's format and what should and should no= t be entered in the file. >>>=20 >>> I've read the current man page on Gentoo Linux, but suspect that it's fa= r from authoritative. I'm hoping that someone can point me to something mor= e authoritative to the hosts file's format, guidelines around entering data,= and how it's supposed to function. >>>=20 >>> A couple of sticking points in the other discussion revolve around how m= any entries a host is supposed to have in the hosts file and any ramificatio= ns for having a host appear as an alias on multiple lines / entries. To whi= t, how correct / incorrect is the following: >>>=20 >>> 192.0.2.1 host.example.net host >>> 127.0.0.1 localhost host.example.net host >>>=20 >>>=20 >>>=20 >>> --=20 >>> Grant. . . . >>> unix || die >> _______________________________________________ >> COFF mailing list >> COFF@minnie.tuhs.org >> https://minnie.tuhs.org/cgi-bin/mailman/listinfo/coff --Apple-Mail-4A2A1E0E-63C1-4CA0-966D-E20E9D6F6D4F Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: quoted-printable
On Mar 11, 2= 021, at 10:08 AM, Warner Losh <imp@bsdimp.com> wrote:
=

On Thu, Mar 11, 2021 at 1= 0:40 AM Bakul Shah <bakul@iitbomba= y.org> wrote:
For each host a single line sh=
ould be present with the following information:
	   Internet address
	   official host name
	   aliases
<=
b style=3D"color:rgb(153,102,0)">HISTORY
     The hosts file format appeared in=
 4.2BSD.

While this i= s true wrt the history of FreeBSD/Unix, I'm almost positive that BSD didn't i= nvent it. I'm pretty sure it was picked up from the existing host file that w= as published by sri-nic.arpa before DNS.

A different and more verbose format. See RFCs 810 &= 952. Possibly because it had to serve more purposes?

Warner
 
On Mar 11, 2021, at 9:14 AM, Grant T= aylor via TUHS <tuhs@minnie.tuhs.org> wrote:

=EF=BB=BFHi,

= I'm not sure where this message best fits; TUHS, COFF, or Internet His= tory, so please forgive me if this list is not the best location.
=
I'm discussing the hosts file with someone and was wo= ndering if there's any historical documentation around it's format and what s= hould and should not be entered in the file.

I've read the current man page on Gentoo Linux, but suspect that it's far f= rom authoritative.  I'm hoping that someone can point me to something m= ore authoritative to the hosts file's format, guidelines around entering dat= a, and how it's supposed to function.

A cou= ple of sticking points in the other discussion revolve around how many entri= es a host is supposed to have in the hosts file and any ramifications for ha= ving a host appear as an alias on multiple lines / entries.  To whit, h= ow correct / incorrect is the following:

19= 2.0.2.1    h= ost.example.net    host
127.0.0.1    = ;localhost    host.example.net    host



--
Grant. . . .
<= span>unix || die

_= ______________________________________________
COFF mailing list
COFF@minnie.tuhs.o= rg
https://minnie.tuhs.org/cgi-bin/mailman/listinfo/= coff
= --Apple-Mail-4A2A1E0E-63C1-4CA0-966D-E20E9D6F6D4F--