Apr 29 08:13:43 tstack-centos5 NET[13682]: /sbin/dhclient-script : updated /etc/resolv.conf
 key  43:43                                            ^                                                  
 key  43:64                                             ^-------------------^                             /sbin/dhclient-script
pair  43:64                                             ^-------------------^                             /sbin/dhclient-script
 key  75:75                                                                            ^                  
path  75:91                                                                             ^--------------^  /etc/resolv.conf
pair  75:91                                                                             ^--------------^  /etc/resolv.conf