Date: Sun, 17 Feb 2008 01:19:20 +0900 From: Hajimu UMEMOTO <ume@FreeBSD.org> To: Pawel Worach <pawel.worach@gmail.com> Cc: src-committers@FreeBSD.org, ache@nagual.pp.ru, cvs-all@FreeBSD.org, delphij@FreeBSD.org, cvs-src@FreeBSD.org, Dag-Erling =?ISO-8859-1?Q?Sm=F8rgrav?= <des@des.no>, "M. Warner Losh" <imp@bsdimp.com> Subject: Re: cvs commit: src/lib/libc/resolv res_comp.c Message-ID: <ygehcg8kh6f.wl%ume@mahoroba.org> In-Reply-To: <47B6EBF5.3030505@gmail.com> References: <200802160016.m1G0GnFB046558@repoman.freebsd.org> <20080216024541.GA31498@nagual.pp.ru> <20080215.233427.1598351542.imp@bsdimp.com> <863artw4wh.fsf@ds4.des.no> <47B6EBF5.3030505@gmail.com>
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Hi,
>>>>> On Sat, 16 Feb 2008 14:58:13 +0100
>>>>> Pawel Worach <pawel.worach@gmail.com> said:
pawel> Dag-Erling Smørgrav wrote:
> "M. Warner Losh" <imp@bsdimp.com> writes:
>> Plus there was a very long, very heated thread about removing _ as a
>> valid name years ago. Have conditions changed since then? Frankly,
>> I'd like to have seen a change like this discussed more widely. There
>> was much debate before, and there turned out to be good reasons for
>> omitting the _. I just can't recall them now.
>
> There are valid reasons for allowing it. Somebody[tm] (I'll leave it up
> to you to guess who) thought it was a good idea to use _ in DNS names
> used for automatic detection of web proxies and domain controllers, IIRC.
>
pawel> BIND allows it in SRV records but not in A records.
Not all DNS servers are BIND. Though use of `_' in hostname violates
RFC, some implementations of DNS server allow it, and it is used
actually.
Sincerely,
--
Hajimu UMEMOTO @ Internet Mutual Aid Society Yokohama, Japan
ume@mahoroba.org ume@{,jp.}FreeBSD.org
http://www.imasy.org/~ume/
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