Marc, I thank you very much for the answer. I have tried: # /etc/rc.d/init.d/network restart response of redhat: shutting down loopback interface [OK] setting network parameters [OK] Bringing up loopback interface: arping: socket: address family not supported by protocol Error, some other host already uses address 127.0.01 [FAILED] Bringing up interface eth0 [OK] Response of # ifconfig : command not found Response of # netconfig : command not found How can I know which other host uses the address 127.0.0.1 Would you give any more advices, please?! Thanks in advance Best Regard Nofri Marc M <linuxr@gmail.com> wrote:<blockquote class="replbq" style="border-left: 2px solid rgb(16, 16, 255); margin-left: 5px; padding-left: 5px;"> Just go # service network stop (that shuts down networking) then do # service network start (which should make the service start). Now do # ifconfig eth0 and it will tell you if it is up or not. If eth0 is not up do # ifup eth0 and that should bring it up Good luck Marc <div>On 5/4/06, Nofriyadi Nurdam <<a href="mailto:nnurdam_rh@yahoo.com">nnurdam_rh@yahoo.com</a>> wrote:<blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"><div style="direction: ltr;"> Hi All, I am a computer class teacher and have to teach how to set up RedHat9. But I have problem with network configuration. I have tried System Setting > Network. Under Network Configuration I find - Defice: status=inactive, alias=eth0 - Hardware: RealTek RTL-8139, SMC Ez Card - DNS: hostname= computer_name - Hosts: <a href="http://127.0.0.1" target="_blank" onclick="return top.js.OpenExtLink(window,event,this)"> 127.0.0.1</a> computer_name localhost.localdomain localhost As I clicked the profile of device and activitated it, I became message: You have made changes in your configuration. To activate the network device eth0, the changes have to be saved The message after saving: Changes are saved. You may want to restart network and network service or restart the computer. I have restarted my computer, but the network device stay inactive. Would you help me please, how to activate the network device. In the network there has not been DNS server. (I hope, I could build it next time). Thanks in advance Nofri<div></div></div><div style="direction: ltr;"> <hr size="1">How low will we go? Check out Yahoo! Messenger's low <a href="http://us.rd.yahoo.com/mail_us/taglines/postman8/*http://us.rd.yahoo.com/evt=39663/*http://voice.yahoo.com" target="_blank" onclick="return top.js.OpenExtLink(window,event,this)"> PC-to-Phone call rates. </a></div><div style="direction: ltr;"><div></div></div> _______________________________________________ Redhat-install-list mailing list <a onclick="return top.js.OpenExtLink(window,event,this)" href="mailto:Redhat-install-list@redhat.com"> Redhat-install-list@redhat.com</a> <a onclick="return top.js.OpenExtLink(window,event,this)" href="https://www.redhat.com/mailman/listinfo/redhat-install-list" target="_blank">https://www.redhat.com/mailman/listinfo/redhat-install-list </a> To Unsubscribe Go To ABOVE URL or send a message to: <a onclick="return top.js.OpenExtLink(window,event,this)" href="mailto:redhat-install-list-request@redhat.com">redhat-install-list-request@redhat.com</a> Subject: unsubscribe </blockquote></div> _______________________________________________ Redhat-install-list mailing list Redhat-install-list@redhat.com https://www.redhat.com/mailman/listinfo/redhat-install-list To Unsubscribe Go To ABOVE URL or send a message to: redhat-install-list-request@redhat.com Subject: unsubscribe</blockquote> <hr size=1>Yahoo! Mail goes everywhere you do. <a href="http://us.rd.yahoo.com/evt=31132/*http://mobile.yahoo.com/services?promote=mail"> Get it on your phone</a>. <hr size=1>Yahoo! Messenger with Voice. <a href="http://us.rd.yahoo.com/mail_us/taglines/postman1/*http://us.rd.yahoo.com/evt=39663/*http://voice.yahoo.com">Make PC-to-Phone Calls</a> to the US (and 30+ countries) for 2¢/min or less.