[  818.534149][T10383] PPP generic driver version 2.4.2
[  818.542693][T10383] NET: Registered PF_PPPOX protocol family
[  818.559878][T10383] l2tp_core: L2TP core driver, V2.0
[  818.570190][T10383] l2tp_ppp: PPPoL2TP kernel driver, V2.0
[  823.673864][T10463] iperf3 (10463) used greatest stack depth: 22672 bytes left
[  823.804144][T10467] ppp0: recursion detected
[  824.866933][T10421] ppp0: recursion detected