XDP Redirect - Ping fail

Hello,

I see a ping not working in below topology with xdp redirect

                               --------------------------------------
IFACE1 <--------->  |  IFACE2                  IFACE3 |
<------------------> IFACE4
                              ----------------------------------------

IFACE2 and IFACE3 are on same host machine

IFACE1 and IFACE2 are  on static ip
IFACE3 and IFACE4 are on dynamic ip, IFACE4 runs dhcp server

steps
1. assign static ip between IFACE1 and IFACE2 (ex: 172.168.2.x)
2. dynamic ip between IFACE3 and IFACE4 (ex: 192.168.2.x)
3. Run xdp redirect on IFACE2 and IFACE3
4. start ping from IFACE1 to IFACE4

Are some of the assumptions not right here leading to ping failure ?

Regards,
teamlnx