Issue

• The function change_resolv_conf() in /etc/sysconfig/network-scripts/network-functions deletes all rows from /etc/resolv.conf except options when it's defined. For example, consider /etc/resolv.conf has the following contents:

  # cat /etc/resolv.conf
  ; generated by /sbin/dhclient-script
  search pnq.redhat.com. redhat.com. csb
  nameserver 192.168.10.10
  nameserver 192.168.10.11
  options timeout:1
  

• By restarting the network service or recycling a network interface, the contents gets rewritten as follows:

  # cat /etc/resolv.conf
  options timeout:1