misunderstanding of format in print function

[buran]

*client_address unpacks the tuple into its individual elements. This way format(*client_address,client_address[1],message['FrameNumber']) is same as format('192.168.167.200', 49706, 49706, 396)
You have just 3 placeholders thus the last element (396) is simply ignored

when on 2 lines it just ignores the second 49706.

In other words, change your code to .format(*client_address, message['FrameNumber'])