//"tc filter add dev eth0 parent ffff: protocol ip prio $ifbNumber u32 match ip src $ipsrc match u32 0 0 action mirred egress redirect dev $ifb$ifbnumber"
str:="tc filter add dev eth0 parent ffff: protocol ip prio "+ifbNumber+" u32 match ip src "+ipSrc+" match u32 0 0 action mirred egress redirect dev ifb"+ifbNumber