Hello, eveyone, I am learning the batman.adv recently.   

We know that batman.adv works on layer 2. When the network topology change, 
batman.adv can know this change and handle it. But the IP layer doesn't know 
that. How to make IP layer handle the change of network topology?  

For example, I have 3 mesh nodes, client node A, gateway node B and geteway 
node C. A connects  to internet via B. Then I shutdown B. I guess A will switch 
to C as it's gateway node automatically. But it's not so. A continuously send 
the ARP request packet to search the MAC address of B. The default gateway is 
still B, not C.  

So, how should I do to make the IP layer be aware of that the gateway has 
swithed to another one?  

Thanks! Best regards.  

liu  

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