[  382.822340] PPP generic driver version 2.4.2
[  382.823096] NET: Registered PF_PPPOX protocol family
[  382.825107] l2tp_core: L2TP core driver, V2.0
[  382.826139] l2tp_ppp: PPPoL2TP kernel driver, V2.0
[  387.185714] iperf3 (9549) used greatest stack depth: 11552 bytes left
[  387.224753] ppp0: recursion detected
[  387.710153] ppp0: recursion detected
[  388.240595] ppp0: recursion detected