[  835.944915][T10311] PPP generic driver version 2.4.2
[  835.963122][T10311] NET: Registered PF_PPPOX protocol family
[  836.024409][T10311] l2tp_core: L2TP core driver, V2.0
[  836.039561][T10311] l2tp_ppp: PPPoL2TP kernel driver, V2.0
[  841.119537][T10369] iperf3 (10369) used greatest stack depth: 22656 bytes left
[  841.231036][T10373] ppp0: recursion detected
[  842.280225][T10336] ppp0: recursion detected