[   10.017010] nft (5253) used greatest stack depth: 12136 bytes left
[   52.369368] nft (13141) used greatest stack depth: 12112 bytes left
[   62.848965] nft (14793) used greatest stack depth: 11976 bytes left
[  107.041977] nft (19725) used greatest stack depth: 11928 bytes left