[  862.038056][T10409] PPP generic driver version 2.4.2
[  862.045745][T10409] NET: Registered PF_PPPOX protocol family
[  862.074247][T10409] l2tp_core: L2TP core driver, V2.0
[  862.081081][T10409] l2tp_ppp: PPPoL2TP kernel driver, V2.0
[  867.115432][T10485] iperf3 (10485) used greatest stack depth: 22640 bytes left
[  867.255173][T10489] ppp0: recursion detected
[  868.333562][T10448] ppp0: recursion detected