on the 2nd line we that TX bytes is 653 MB, that's fine!
In the ipv4 section we see that the total TX 'number' comes to over 6GB (if we assume that the number is Kilobytes as works for RX).
What is the packet size?
The RX numbers work for a packet size of about 1KB, but not TX.
The numbers in the ipv4 section seem to promise better RESOLUTION than the numbers on line 2 - especially when the usage reaches GB - which on line 2 is reported to a resolution of only +/- 1GB. So I would be grateful to understand the ACTUAL relationship between the TX 653 MB on line 2 and the >6GB TX in the IPV4 subsection. Can you enlighten me?