in my output from ntpdc -s i get the following $ ntpdc -s remote local st poll reach delay offset disp ======================================================================= *x.x.x.x 10.0.0.15 2 64 377 0.00018 0.029325 0.00363 .x.x.x.x 10.0.0.5 2 64 377 0.00017 0.030048 0.00325 what does the asterisk mean and the period mean before the server name?