added a new optin -I to specify a "default interface" XXX: too many (and confusing) options...
added a new optin -I to specify a "default interface"
XXX: too many (and confusing) options...

MarginC/kame,MarginC/kame,MarginC/kame,MarginC/kame,MarginC/kame,MarginC/kame,MarginC/kame