Re: Resolver Issues (non valid hostname characters)

[David J Duchscher]

Try pinging this 'dont_work.net.tamu.edu'.  Then try doing a
nslookup or dig on the name.  You will find that in
/usr/src/lib/libc/net/res_comp.c at line 133 in the function
res_hnok() the code that restricts DNS queries to RFC 952.
DaveD

On Tuesday, March 25, 2003, at 10:39  AM, Ken Menzel wrote:

hi,
I am not sure where you think freebsd needs support for underscores in
the resolver.
freebsd2# hostname -s free_bsd2
freebsd2# hostname
free_bsd2.icarz.com
freebsd2#vi /etc/hosts   (edit host file here adding new name)
freebsd2# ping free_bsd2
PING free_bsd2.icarz.com (207.99.22.11): 56 data bytes
64 bytes from 207.99.22.11: icmp_seq=0 ttl=64 time=0.128 ms
freebsd2# su
free_bsd2#
If you are having trouble with bind try 'check-names ignore;'
zone "_msdcs.icarz.com" {
        type master;
        file "_msdcs.icarz.com.db";
        allow-update { dmcs; 127.0.0.1; };
        check-names ignore;
};
If that is not what you mean please be more specific.
Best of luck,  hope this helps.
Ken
----- Original Message -----
From: "Marius Strom" <[EMAIL PROTECTED]>
To: "David J Duchscher" <[EMAIL PROTECTED]>
Cc: <[EMAIL PROTECTED]>
Sent: Tuesday, March 25, 2003 10:59 AM
Subject: Re: Resolver Issues (non valid hostname characters)

FWIW, I've been having trouble with domains that in particular have
'_'
in the hostname.

I know it violates RFC952, but lots of people are using them now,
for
good or bad.  How about a compile-time flag to allow a "looser"
adherence to the RFC? (Yeah, I know this would likely be gross, and
thus
I'll defer to people who are more familiar with FreeBSD internals
here)
On Mon, 24 Mar 2003, Dave Duchscher wrote:
It seems that the use of invalid characters in hostnames is
cropping
up more and more.  Besides complaining to the offending site which
often doesn't work, I was wondering if these restrictions on
FreeBSD
should be re-examined.  At this time, it seems that many OSes are
no
longer enforcing this requirement or never have.  In my case, I am
running into a hostnames with an underscore character in the name.
It
seems that Linux, MacOS X, Solaris and Windows all allow this
hostname
to resolve but FreeBSD, as well as the other *BSD, reject it.
Should
FreeBSD follow suit?

DaveD

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--

/------------------------------------------------->
Marius Strom           | Always carry a short length of fibre-optic
cable.
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