Hello TIA If you do not have a local/LAN DNS server neither a caching DNS configuration on your machine, I can't see a reason to add localhost to the list of your DNS servers... The idea behind DHCP is to distribute gateway, dns, ntp and other servers to the clients, beside the IP addresses. It's the way it works to have the /etc/resolv.conf overwritten on machine reboot and DHCP refresh. You might setup your own local DNS server and distribute this one as the first in the list of DNS servers by your active DHCP server. Or you might work with /etc/hosts in order to define a few important/static machines inside the LAN. I'd suggest not activating IPV6, but configuring IPV4 correctly first. Ueli -----Ursprüngliche Nachricht----- Von: centos-bounces at centos.org [mailto:centos-bounces at centos.org] Im Auftrag von Thomas Dukes Gesendet: Freitag, 21. Mai 2010 01:02 An: CentOS Betreff: [CentOS] Resolv.conf being overwritten I am trying to add 127.0.0.1 to my resolv.conf. I added it through the system-config-network but if I reboot, its gone. I do not have the caching nameserver package installed. My ISP's nameservers are there. It must have something to do with DHCP. Also, in the network config GUI, should I select the IPv6 option for either or both network cards? TIA _______________________________________________ CentOS mailing list CentOS at centos.org http://lists.centos.org/mailman/listinfo/centos