老师，我启动rocketmq的时，启动namesrv一切正常，但是我启动broker时就不行，看了log日志，都是ip连接不上，但是我系统的公网ip，内网ip，localhost，127.0.0.1都试过了，都不行，实在不知道了。麻烦老师给点提示呢

rocket版本用的是和您一样的版本4.5.1，阿里云太贵，centos是安装在自己旧的笔记本上，连接的家里的wifi。
114.224.205.68是公网ip 192.168.31.160:是局域网ip

**环境变量我也配了：**export NAMESRV_ADDR=192.168.31.160:9876
broker.conf配置文件添加了两行：
namesrvAddr=192.168.31.160:9876
brokerIP1=114.224.205.68

命令
nohup sh bin/mqbroker -n 114.224.205.68:9876 &
nohup sh bin/mqbroker -n localhost:9876 &
也试了 nohup sh bin/mqbroker -n 192.168.31.160:9876 -c conf/broker.conf &
都不行

报错信息：
2020-09-27 23:55:57 WARN ShutdownHook - unregisterBroker Exception, 114.224.205.68:9876
org.apache.rocketmq.remoting.exception.RemotingConnectException: connect to <114.224.205.68:9876> failed
at org.apache.rocketmq.remoting.netty.NettyRemotingClient.invokeSync(NettyRemotingClient.java:392) ~[rocketmq-remoting-4.5.1.jar:4.5.1]
at org.apache.rocketmq.broker.out.BrokerOuterAPI.unregisterBroker(BrokerOuterAPI.java:248) ~[rocketmq-broker-4.5.1.jar:4.5.1]
at org.apache.rocketmq.broker.out.BrokerOuterAPI.unregisterBrokerAll(BrokerOuterAPI.java:225) ~[rocketmq-broker-4.5.1.jar:4.5.1]
at org.apache.rocketmq.broker.BrokerController.unregisterBrokerAll(BrokerController.java:811) [rocketmq-broker-4.5.1.jar:4.5.1]
at org.apache.rocketmq.broker.BrokerController.shutdown(BrokerController.java:754) [rocketmq-broker-4.5.1.jar:4.5.1]