add option for interface
add option for interface

horryq/tcpcopy,caosiyang/tcpcopy,horryq/tcpcopy,daodaoliang/tcpcopy,ycaihua/tcpcopy,liviusATnetskope/second,daodaoliang/tcpcopy,left2right/tcpcopy,sshling/tcpcopy,ycaihua/tcpcopy,wfxiang08/tcpcopy,left2right/tcpcopy,wfxiang08/tcpcopy,liviusATnetskope/second,eliteYang/tcpcopy,u20024804/tcpcopy,sshling/tcpcopy,eliteYang/tcpcopy,caosiyang/tcpcopy,u20024804/tcpcopy