masc2008 opened a new pull request, #18247:
URL: https://github.com/apache/nuttx/pull/18247

   It's not a valid netdev if without ipv4 address.
   
   *Note: Please adhere to [Contributing 
Guidelines](https://github.com/apache/nuttx/blob/master/CONTRIBUTING.md).*
   
   ## Summary
   Without this patch, if do ping on a system which only has ipv6 address, then 
it will generate ip packet with ip.src == 0.0.0.0.
   with this patch, it will report send error which is more sensible. it 
reduces security concern.
   


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