LINUX下802.1问题

小弟是新手.在校学生.学校校园网没有LINUX版本的客户端,只好自己在网上淘了一个
安装后运行时有如下提示
[root@BYSTANDER mdc-ssd]# mdc-ssd
fcntl (F_SETFL): Invalid argument
mdc-ssd: Couldn't create raw mode socket.
: Illegal seek
mdc-ssd: mdc-ssd: Couldn't create raw mode socket: Illegal seek.
[root@BYSTANDER mdc-ssd]# mdc-ssd
mdc-ssd options in effect:
nodetach # (from /etc/mdc-ssd/options)
logfd 1 # (from /etc/mdc-ssd/options)
dump # (from /etc/mdc-ssd/options)
TLSdebug # (from /etc/mdc-ssd/options)
TLSstate # (from /etc/mdc-ssd/options)
TLSbugs # (from /etc/mdc-ssd/options)
cli.c:149: bind: Address already in use
mdc-ssd: Unable to open socket to communicate with p8021xc client. If mdc-ssd is already running, use clientPort option.
mdc-ssd: Unable to open socket to communicate with p8021xc client. If mdc-ssd is already running, use clientPort option.
mdc-ssd: 802.1X: txLogoff(port=1) (transmit an EAP logoff packet)
好象是说我端口设置不正确?
请问如何设置才好?
我折腾一上午了,也没弄明白-_-#