root@Testdevice:~# batctl o
[B.A.T.M.A.N. adv 2016.5, MainIF/MAC: eth0.3/c4:e9:84:ef:43:b7 (bat0/56:e9:67:59:13:b7 BATMAN_V)]
   Originator        last-seen ( throughput)  Nexthop           [outgoingIF]
 * fa:1a:67:5a:70:ef    0.020s (       45.7)  f8:1a:67:5a:70:ef [    w2mesh]
   fa:1a:67:5a:70:ef    0.020s (        1.0)  fa:1a:67:5a:70:ef [    eth0.3]

root@Testdevice:~# cat /sys/class/net/eth0.3/batman_adv/throughput_override
0.0 MBit
root@Testdevice:~# echo "100000" > /sys/class/net/eth0.3/batman_adv/throughput_override
root@Testdevice:~# cat /sys/class/net/eth0.3/batman_adv/throughput_override
100.0 MBit
root@Testdevice:~# batctl o
[B.A.T.M.A.N. adv 2016.5, MainIF/MAC: eth0.3/c4:e9:84:ef:43:b7 (bat0/56:e9:67:59:13:b7 BATMAN_V)]
   Originator        last-seen ( throughput)  Nexthop           [outgoingIF]
   fa:1a:67:5a:70:ef    0.900s (       45.6)  f8:1a:67:5a:70:ef [    w2mesh]
 * fa:1a:67:5a:70:ef    0.900s (       99.4)  fa:1a:67:5a:70:ef [    eth0.3]