Ping is not working in mesh network

I implemented mesh on top of the 2.4Ghz interface with 3 routers. I assigned IP for each router and pinged each router which works fine but after I force a network using " iw dev wlan0 mpath new dest 1 MAC next_hop next hop MAC" later I can't ping the dest router but I could get mpath and station dump.

I'm not getting the metric data in mpath if I force a network.

Suggestions please!