我尝试运行dpkg -r以删除已安装的软件包但得到以下结果：
>sudo dpkg -r my-pckg
(Reading database ... 57461 files and directories currently installed.)
Removing my-pckg ...
No munin plugin provided. Not deconfiguring munin
Deconfiguring snmp entries
Warning: Failed to restart snmpd service. .
Please run sudo service snmpd restart
Processing triggers for ureadahead ...
当我尝试重新启动时snmpd，出现以下信息
>sudo service snmpd restart
* Restarting network management services:
当我列出所有服务（sudo service --status-all）时，snmpd 显示为
[-] snmpd 配置文件
snmpd 在 dpkg 删除中起什么作用？我该如何解决这个问题？