ORACLE listener service stops after it is started

The ORACLE listener service stops again after it is started. "OracleOraHome81 TNSListener service stops again after it is started,
Some services are automatically stopped, if they have nothing to do
Cause: the ip address obtained by the wireless network adapter is changed to www.2cto.com d: \ oracle \ product \ 10.1.0 \ db_2 \ network \ admin \ listener. the ora listening file is changed to the following: the HOST value is changed to 127.0.0.1. Note: Changing to localhost will not work. # Listener. ora Network Configuration File: d: \ oracle \ product \ 10.1.0 \ db_2 \ network \ admin \ listener. ora # Generated by Oracle configuration tools. SID_LIST_LISTENER = (SID_LIST = (SID_DESC = (SID_NAME = PLSExtProc) (ORACLE_HOME = d: \ oracle \ product \ 10.1.0 \ db_2) (PROGRAM = extproc) www.2cto.com) LISTENER = (DESCRIPTION_LIST = (DESCRIPTION = (ADDRESS_LIST = (ADDRESS = (PROTOCOL = IPC) (KEY = EXTPROC) (ADDRESS_LIST = (ADDRESS = (PROTOCOL = TCP) (HOST = 127.0.0.1) (PORT = 1521) by ynz1219