Hi, I've found the solution: That's not a problem with DHCP and DNS. There a 2 missing entrys in /etc/sysconfig/network-scripts/ifcfg-eth0: DHCP_CLIENT_ID=st00ni0029 DHCP_HOSTNAME=st00ni0029 With this entrys the Network-Manager build a new /var/run/nm-dhclient-eth0.conf : # Created by NetworkManager send dhcp-client-identifier "st00ni0029"; # added by NetworkManager send host-name "st00ni0029"; # added by NetworkManager Thanks Andreas <table width=100%> <tr valign=top> <td width=40%>Andreas Reschke <Andreas.Reschke@behrgroup.com> Gesendet von: rhelv6-list-bounces@redhat.com 17.01.2011 12:12 <table border> <tr valign=top> <td bgcolor=white> <div align=center>Bitte antworten an "Red Hat Enterprise Linux 6 \(Santiago\) discussion mailing-list" <rhelv6-list@redhat.com></div></table> <td width=59%> <table width=100%> <tr valign=top> <td> <div align=right>An</div> <td>"Red Hat Enterprise Linux 6 \(Santiago\) discussion mailing-list" <rhelv6-list@redhat.com> <tr valign=top> <td> <div align=right>Kopie</div> <td> <tr valign=top> <td> <div align=right>Thema</div> <td>[rhelv6-list] Antwort: Re: Question to /var/run/nm-dhclient-eth0.conf</table> <table> <tr valign=top> <td> <td></table> </table> <tt>rhelv6-list-bounces@redhat.com schrieb am 14.01.2011 19:16:17:</tt> <tt>> "Collins, Kevin [BEELINE]" <KCollins@chevron.com> </tt><tt> </tt> <tt>> Gesendet von: rhelv6-list-bounces@redhat.com</tt> <tt>> </tt><tt> </tt> <tt>> 14.01.2011 19:18</tt><tt> </tt> <tt>> </tt> <tt>> Bitte antworten an</tt> <tt>> "Red Hat Enterprise Linux 6 \(Santiago\) discussion mailing-list" </tt> <tt>> <rhelv6-list@redhat.com></tt><tt> </tt> <tt>> </tt> <tt>> An</tt><tt> </tt> <tt>> </tt> <tt>> "Red Hat Enterprise Linux 6 (Santiago) discussion mailing-list" </tt> <tt>> <rhelv6-list@redhat.com></tt><tt> </tt> <tt>> </tt> <tt>> Kopie</tt><tt> </tt> <tt>> </tt> <tt>> Thema</tt><tt> </tt> <tt>> </tt> <tt>> Re: [rhelv6-list] Question to /var/run/nm-dhclient-eth0.conf</tt><tt> </tt> <tt>> </tt> <tt>> I believe that setting is used only to ID the DHCP client with the </tt> <tt>> DHCP server, which has nothing at all to do with nslookup (which is </tt> <tt>> for querying DNS).</tt><tt> </tt> <tt>> </tt> <tt>> </tt><tt> </tt> <tt>> </tt> <tt>> In order for nslookup to work, your DHCP server(s) need to be </tt> <tt>> configured for DNS auto-updates, and your DNS server(s) need to be </tt> <tt>> configured to allow auto-updates from the DHCP servers.</tt><tt> </tt> <tt>> </tt> <tt>> </tt><tt> </tt> <tt>> </tt> <tt>> Kevin</tt><tt> </tt> <tt>> </tt> <tt>> </tt><tt> </tt> <tt>> </tt> <tt>> From: rhelv6-list-bounces@redhat.com [</tt><a href="mailto:rhelv6-list-bounces@redhat.com"><tt>mailto:rhelv6-list-bounces@redhat.com</tt></a><tt>] </tt> <tt>> On Behalf Of Andreas Reschke</tt><tt> </tt> <tt>> Sent: Friday, January 14, 2011 3:09 AM</tt><tt> </tt> <tt>> To: rhelv6-list@redhat.com</tt><tt> </tt> <tt>> Subject: [rhelv6-list] Question to /var/run/nm-dhclient-eth0.conf</tt> <tt>> </tt> <tt>> </tt><tt> </tt> <tt>> </tt> <tt>> Hello, </tt> <tt>> I'm using Red Hat 6 (up2date) on my laptop. Sometimes i must use </tt> <tt>> Windows with vmplayer located on the laptop. The samba configuration</tt> <tt>> on Red Hat works fine. I don't want to use the ip-adress of the </tt> <tt>> laptop, so I added send dhcp-client-identifier "st00ni0029"; to the </tt> <tt>> /var/run/nm-dhclient-eth0.conf. </tt><tt> </tt> <tt>> nslookup from windows can't find my hostname. </tt><tt> </tt> <tt>> </tt> <tt>> What's wrong with my configuration?</tt><tt> </tt> <tt>> </tt> <tt>> Gruß </tt> <tt>> Andreas Reschke</tt><tt> </tt> <tt>> </tt> <tt>> Unix/Linux-Administration</tt><tt> </tt> <tt>> Andreas.Reschke@behrgroup.com</tt><tt> </tt> <tt>> _______________________________________________</tt> <tt>> rhelv6-list mailing list</tt> <tt>> rhelv6-list@redhat.com</tt> <tt>> </tt><a href="https://www.redhat.com/mailman/listinfo/rhelv6-list"><tt>https://www.redhat.com/mailman/listinfo/rhelv6-list</tt></a><tt> </tt> <tt>Hi Kevin,</tt><tt> </tt> <tt>The DHCP- and DNS-Server are Windows. In older Version of Fedora and Red Hat with /etc/dhclient-eth0.conf I dind't have this problem. </tt><tt> </tt> <tt>I will talk with my Windows-Admin.</tt><tt> </tt> <tt>Thanks</tt><tt> </tt> <tt>Andreas</tt> <tt>_______________________________________________ rhelv6-list mailing list rhelv6-list@redhat.com </tt><a href="https://www.redhat.com/mailman/listinfo/rhelv6-list"><tt>https://www.redhat.com/mailman/listinfo/rhelv6-list</tt></a>