[  849.358756][T11248] PPP generic driver version 2.4.2
[  849.372647][T11248] NET: Registered PF_PPPOX protocol family
[  849.393500][T11248] l2tp_core: L2TP core driver, V2.0
[  849.400419][T11248] l2tp_ppp: PPPoL2TP kernel driver, V2.0
[  854.382126][T11324] iperf3 (11324) used greatest stack depth: 22672 bytes left
[  854.487202][T11328] ppp0: recursion detected
[  855.551632][T11287] ppp0: recursion detected