jnippula commented on PR #17304:
URL: https://github.com/apache/nuttx/pull/17304#issuecomment-3516426097

   I understood now, the check "if (dev == conn->dev)" can of course be 
successful in case there are more than one TCP connection. There is no check 
which connection the data in current iob is related to. So if there is another 
active TCP connection, the devif_poll would use the device's current iob for 
sending for that one. I agree, checking whether devif_poll did something or not 
does not help, but the iob may be used and corrupted due to another connection.
   
   So, this shall not be merged.


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