cvs commit: src/lib/libc/resolv res_comp.c

Hajimu UMEMOTO ume at
Sat Feb 16 08:19:55 PST 2008


>>>>> On Sat, 16 Feb 2008 14:58:13 +0100
>>>>> Pawel Worach <pawel.worach at> said:

pawel> Dag-Erling Smørgrav wrote:
> "M. Warner Losh" <imp at> 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


Hajimu UMEMOTO @ Internet Mutual Aid Society Yokohama, Japan
ume at  ume@{,jp.}

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