Re: XDP redirect - ping fail

On 5/4/2023 10:38 AM, team lnx wrote:
> 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

Does IFACE1 have a route to 192.168.2.x and is the next hop resolved? 
You can use `tcpdump` on IFACE1 and IFACE4 to see what packets are sent 
and received.