It depends on the netmask. In this case, you are on a class C, so the first valid IP would start at 1 and go to 254 in the last octet. Whomever setup that dhcp server is an idiot. <div class="gmail_quote">On Oct 8, 2012 6:44 PM, "Patrick Collora" <<a href="mailto:collorap@pjc.name">collorap@pjc.name</a>> wrote: <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"> Not Linux-specific, but maybe someone here knows the answer. I was having some trouble connecting to the Internet through my router, and I suspect it might be due to the IP address I was assigned. When I bypassed the router, AT&T assigned the following to my PC. IPv4 Address. . . . . . . . . . . : 108.68.143.0 Subnet Mask . . . . . . . . . . . : 255.255.255.0 Default Gateway . . . . . . . . . : 108.68.143.1 Is the IP ending in zero valid, or is it the network identifier? Thanks. -Patrick _______________________________________________ linux-user mailing list <a href="mailto:linux-user@egr.msu.edu" target="_blank">linux-user@egr.msu.edu</a> <a href="http://mailman.egr.msu.edu/mailman/listinfo/linux-user" target="_blank">http://mailman.egr.msu.edu/mailman/listinfo/linux-user</a> </blockquote></div>