Any suggestions about configuring batman-adv gateways + modems

[Xuebing Wang <xbing6@gmail.com>]

Hi Marek,

Thank you for your help, as I did not subscribe to the mailing list, I 
did not get your reply. I subscribe to the mailing list now and I am 
writing a new email thread.


 >> We have been building openwrt 15.05 + batman-adv mesh network for over 2
 >> years, they work great.
 >
 >hopefully, the batman-adv version you are using is newer than 15.05 ...
 >
 >
 >> 1) My first thought is to use batman-adv gateway (with 4G modem
 >> connected) as dhcp server, and forward batman-adv interface to wan
 >> interface (modem).
 >>
 >> 1.1)  But, there is an issue with this setup. Once a modem is down,
 >> nodes that are connected to this batman-adv gateway (with modem) can not
 >> automatically "roam" to another batman-adv gateway (with good modem
 >> connection).
 >
 >Why not ? What should prevent nodes or clients to choose another 
batman-adv
 >gateway ?

When modem (for WAN uplink) at gateway is down and loses internet 
connection (but batman-adv connections with clients are good and dhcp 
server works good), can batman-adv clients know that internet connection 
at gateway is lost and "roam" to another gateway with good internet 
connection?

Thanks.
Xuebing Wang