i was configuring "IEEE 802.11s std and open80211s" & i was following below link
  /github.com/o11s/open80211s/wiki/HOWTO#setup-an-open-mesh-network

with this i was able to
$ ping 8.8.8.8
I was getting positive results

when i tried usnig
$ ping -I mesh0  8.8.8.8
i was '''not''' able to ping...
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i treied bridging mesh0 with br-lan
with this i can see below interfaces bridged to br-lan

eth0.1(lan interface)
wlan0-1(wifi lan interface)
mesh0

after bridging i was not able to ping mesh interfaces  i.e. i had configured two routers in mesh & after bridging i was not able to ping mesh intefaces.
ALSO i was not able to "ping -I mesh0 8.8.8.8".

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i also tried creating bridge bridging mesh0 & eth0.2(wan interface)

brctl addbr br0
brctl addif br0 mesh0
brctl addif br0 eth0.2
ifconfig $MESH_IP

with this i was able to ping between mesh interfaces.
ALSO i was not able to "ping -I mesh0 8.8.8.8".

(Last edited by bharaths on 15 Jun 2017, 14:59)