[    6.195012] nft (2239) used greatest stack depth: 12488 bytes left
[   45.738205] ip (11307) used greatest stack depth: 12456 bytes left
[   48.107365] nft (12363) used greatest stack depth: 12016 bytes left
[   61.179223] nft (14379) used greatest stack depth: 11912 bytes left
[  134.232222] iperf3 (27100) used greatest stack depth: 11656 bytes left