06-02-2008
You can probably approximate what Microsoft is doing by simply dropping any illegal trailing characters.
By the by, the highlighted Server: header is a red herring; the issue is with how a Windows client would resolve the domain name.
If you can run tcpdump on the DNS traffic from the Windows box while it resolves and visits the site in IE (or simply opens a telnet session), you should see what host name the Windows box is actually resolving.
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LEARN ABOUT SUSE
gethostid
GETHOSTID(3) Linux Programmer's Manual GETHOSTID(3)
NAME
gethostid, sethostid - get or set the unique identifier of the current host
SYNOPSIS
#include <unistd.h>
long gethostid(void);
int sethostid(long hostid);
Feature Test Macro Requirements for glibc (see feature_test_macros(7)):
sethostid(): _BSD_SOURCE || (_XOPEN_SOURCE && _XOPEN_SOURCE < 500)
DESCRIPTION
gethostid() and sethostid() respectively get or set a unique 32-bit identifier for the current machine. The 32-bit identifier is intended
to be unique among all Unix systems in existence. This normally resembles the Internet address for the local machine, as returned by geth-
ostbyname(3), and thus usually never needs to be set.
The sethostid() call is restricted to the superuser.
RETURN VALUE
gethostid() returns the 32-bit identifier for the current host as set by sethostid().
On success, sethostid() returns 0; on error, -1 is returned, and errno is set to indicate the error.
ERRORS
sethostid() can fail with the following errors:
EACCES The caller did not have permission to write to the file used to store the host ID.
EPERM The calling process's effective user or group ID is not the same as its corresponding real ID.
CONFORMING TO
4.2BSD; these functions were dropped in 4.4BSD. SVr4 includes gethostid() but not sethostid(). POSIX.1-2001 specifies gethostid() but not
sethostid().
NOTES
In the glibc implementation, the hostid is stored in the file /etc/hostid. (In glibc versions before 2.2, the file /var/adm/hostid was
used.)
In the glibc implementation, if gethostid() cannot open the file containing the host ID, then it obtains the hostname using gethostname(2),
passes that hostname to gethostbyname_r(3) in order to obtain the host's IPv4 address, and returns a value obtained by bit-twiddling the
IPv4 address. (This value may not be unique.)
BUGS
It is impossible to ensure that the identifier is globally unique.
SEE ALSO
hostid(1), gethostbyname(3)
COLOPHON
This page is part of release 3.25 of the Linux man-pages project. A description of the project, and information about reporting bugs, can
be found at http://www.kernel.org/doc/man-pages/.
Linux 2009-01-13 GETHOSTID(3)