Re: IP connectivity issue at openwrt nodes

[Sven Eckelmann <sven@narfation.org>]

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On Tuesday, 19 November 2024 15:59:58 CET Mu De wrote:
> "batctl o" shows empty table

Which means that the underlying link is not working. Either because the 
interface is down, not connected or is manipulating the transmitted OGMs 
(broadcast) in some form. The latter can for example happen if the underlying 
link is converting broadcasts to unicast - some accesspoints are doing that. I 
just mention this because you seem to use station interfaces as underlying 
interface for bat0.

You can use tcpdump on the underlying interface to see whether the submitted 
packets (OGMs) on one side are received exactly the same on the other side. 
Wireshark has support for batman-adv. So, you could easily check the recorded 
PCAPs with it.

You can also check "batctl n" to see on which side you can correctly "hear" 
OGM packets. If you can not hear it only on one side then you should check 
this one initially (but continue with the rest).

Kind regards,
	Sven

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