1 [libdefaults]
   2 dns_lookup_realm = false
   3 
   4 [realms]
   5 R1 = {
   6    kdc = k12
   7 }
   8 R2 = {
   9    kdc = old
  10 }

   1 [libdefaults]
   2 dns_lookup_kdc = false
   3 
   4 [realms]
   5 R1 = {
   6    kdc = k12
   7 }
   8 R2 = {
   9    kdc = old
  10 }