from one end.(host1) route add -host 10.8.0.238 gw nb-namran .. and the other end(host2). route add -host 192.168.88.19 gw nb-namran and at nb-namran echo “1” >  /proc/sys/net/ipv4/ip_forward .. should then. can ping host1 from host2 and vice versa.

continue reading.....