Mine

group {
   option routers                  192.168.1.254;
   option subnet-mask              255.255.255.0;
   option domain-name-servers      212.59.0.1, 212.59.0.2;

   host pirmas {
      hardware ethernet 00:A0:78:8E:9E:AA; 
      fixed-address 192.168.1.1;
   }
   host antras {
      hardware ethernet 00:A1:DD:74:C3:F2;
      fixed-address 192.168.1.2;
   }
}

group {
   option routers                  192.168.2.254;
   option subnet-mask              255.255.255.0;
   option domain-name-servers      212.59.0.1, 212.59.0.2;

   host trecias {
      hardware ethernet 00:0B:6A:1E:62:B7; 
      fixed-address 192.168.2.1;
   }
   host ketvirtas {
      hardware ethernet 00:02:6F:38:D7:BB;
      fixed-address 192.168.2.2;
   }
}