Hi Sven & Marek!

Thanks for your help. Find the client side config down below:

$ batctl -v
batctl openwrt-2019.2-3 [batman-adv: openwrt-2019.2-4]

$ batctl gwl
[B.A.T.M.A.N. adv openwrt-2019.2-4, MainIF/MAC: fastd_mesh/ (bat0/
BATMAN_V)]
  Router            ( throughput) Next Hop          [outgoingIf]  Bandwidth
   (        1.0)  [fastd_mesh]: 10.0/10.0 MBit
   (        1.0)  [fastd_mesh]: 10.0/10.0 MBit
   (        1.0)  [fastd_mesh]: 10.0/10.0 MBit
   (        1.0)  [fastd_mesh]: 10.0/10.0 MBit
   (        1.0)  [fastd_mesh]: 10.0/10.0 MBit
*  (        1.0)  [fastd_mesh]: 10.0/10.0 MBit

 Star means choosen gateway?

$ batctl gw_mode
client (selection class: 5.0 MBit)


Regards,
Martin