Date: Wed, 13 Feb 2008 13:21:38 +0900 From: Hajimu UMEMOTO <ume@freebsd.org> To: d@delphij.net Cc: freebsd-net@freebsd.org Subject: Re: Strange resolver behavior Message-ID: <ygeve4tlc4t.wl%ume@mahoroba.org> In-Reply-To: <47B2488D.70707@delphij.net> References: <47B2488D.70707@delphij.net>
next in thread | previous in thread | raw e-mail | index | archive | help
Hi,
>>>>> On Tue, 12 Feb 2008 17:31:57 -0800
>>>>> Xin LI <delphij@delphij.net> said:
delphij> [delphij@charlie] ~> host ps_other.a.shifen.com
delphij> ps_other.a.shifen.com has address 202.108.22.46
delphij> Host ps_other.a.shifen.com not found: 3(NXDOMAIN)
`_' is not allowed in hostname. Our resolver (BIND's resolver)
rejects it.
If you don't want this behavior, you can try the following patch, but
I don't recommend:
Index: lib/libc/resolv/res_comp.c
diff -u -p lib/libc/resolv/res_comp.c.orig lib/libc/resolv/res_comp.c
--- lib/libc/resolv/res_comp.c.orig 2006-07-17 19:09:58.000000000 +0900
+++ lib/libc/resolv/res_comp.c 2008-02-13 13:14:35.000000000 +0900
@@ -151,7 +151,7 @@ dn_skipname(const u_char *ptr, const u_c
#define digitchar(c) ((c) >= 0x30 && (c) <= 0x39)
#define borderchar(c) (alphachar(c) || digitchar(c))
-#define middlechar(c) (borderchar(c) || hyphenchar(c))
+#define middlechar(c) (borderchar(c) || hyphenchar(c) || ((c) == 0x5f))
#define domainchar(c) ((c) > 0x20 && (c) < 0x7f)
int
Sincerely,
--
Hajimu UMEMOTO @ Internet Mutual Aid Society Yokohama, Japan
ume@mahoroba.org ume@{,jp.}FreeBSD.org
http://www.imasy.org/~ume/
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?ygeve4tlc4t.wl%ume>