[    2.316332] nft (259) used greatest stack depth: 12736 bytes left
[    6.587478] nft (449) used greatest stack depth: 12664 bytes left
[   11.297416] ip (682) used greatest stack depth: 12360 bytes left
[   12.309890] ip (792) used greatest stack depth: 12344 bytes left
[  147.167189] iperf3[17724]: segfault at 0 ip 0000000000000000 sp 00007fff70b40300 error 14 likely on CPU 2 (core 2, socket 0)
[  147.167328] Code: Unable to access opcode bytes at 0xffffffffffffffd6.