How can I suppress these syslog messages: >Nov 21 19:39:34 ns1 named[115]: Cleaned cache of 112 RRsets >Nov 21 19:39:34 ns1 named[115]: USAGE 974853574 973576958 CPU=47.07u/24.13s >Nov 21 19:39:34 ns1 named[115]: NSTATS 974853574 973576958 A=12799 PTR=4957 >Nov 21 19:39:34 ns1 named[115]: XSTATS 974853574 973576958 RR=13132 RNXD=435