[  901.674045][T11243] PPP generic driver version 2.4.2
[  901.683006][T11243] NET: Registered PF_PPPOX protocol family
[  901.704073][T11243] l2tp_core: L2TP core driver, V2.0
[  901.716838][T11243] l2tp_ppp: PPPoL2TP kernel driver, V2.0
[  906.738284][T11318] iperf3 (11318) used greatest stack depth: 22704 bytes left
[  906.871499][T11322] ppp0: recursion detected
[  907.927567][T11281] ppp0: recursion detected