:PREROUTING,FORWARD,OUTPUT,POSTROUTING *mangle -m connmark --mark 0xffffffff;=;OK -m connmark --mark 0xffffffff/0xffffffff;-m connmark --mark 0xffffffff;OK -m connmark --mark 0xffffffff/0;=;OK -m connmark --mark 0/0xffffffff;-m connmark --mark 0;OK -m connmark --mark -1;;FAIL -m connmark --mark 0xfffffffff;;FAIL -m connmark;;FAIL