scripts/dhclient.conf

   1 send host-name "<hostname>";
   2 option proxy-auto-config code 252 = text;
   3 request subnet-mask, broadcast-address, routers, host-name,
   4         domain-search, domain-name, domain-name-servers,
   5         time-offset, time-servers, ntp-servers, interface-mtu,
   6         proxy-auto-config;
   7 require subnet-mask, domain-name-servers;