执行rndc 显示time out，但是log里面却有command channel listening on 127.0.0.1#953

cmyyjcc

如题，执行rndc dumpdb等命令，等好长时间会显示time out，而且dns也不起作用了，但是log是这样的，是什么问题呢？？

May 30 12:55:23 localhost named[23003]: shutting down
May 30 12:55:23 localhost named[23003]: stopping command channel on 127.0.0.1#953
May 30 12:55:24 localhost named[23003]: no longer listening on 127.0.0.1#53
May 30 12:55:24 localhost named[23003]: no longer listening on 202.112.61.52#53
May 30 12:55:24 localhost named[23003]: exiting
May 30 12:55:24 localhost named: named 关闭 succeeded
May 30 12:57:40 localhost named[2435]: starting BIND 9.2.4 -u named
May 30 12:57:40 localhost named[2435]: using 1 CPU
May 30 12:57:40 localhost named: named 启动 succeeded
May 30 12:57:40 localhost named[2435]: loading configuration from '/etc/named.conf'
May 30 12:57:40 localhost named[2435]: no IPv6 interfaces found
May 30 12:57:40 localhost named[2435]: listening on IPv4 interface lo, 127.0.0.1#53
May 30 12:57:40 localhost named[2435]: listening on IPv4 interface eth0, 202.112.61.52#53
May 30 12:57:40 localhost named[2435]: command channel listening on 127.0.0.1#953
May 30 12:57:40 localhost named[2435]: zone 0.in-addr.arpa/IN: loaded serial 42
May 30 12:57:40 localhost named[2435]: zone 0.0.127.in-addr.arpa/IN: loaded serial 1997022700
May 30 12:57:40 localhost named[2435]: zone 255.in-addr.arpa/IN: loaded serial 42
May 30 12:57:40 localhost named[2435]: zone 0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.ip6.arpa/IN: loaded serial 199702270
0
May 30 12:57:40 localhost named[2435]: zone localdomain/IN: loaded serial 42
May 30 12:57:40 localhost named[2435]: zone localhost/IN: loaded serial 42
May 30 12:57:40 localhost named[2435]: running