[  408.309121] PPP generic driver version 2.4.2
[  408.310059] NET: Registered PF_PPPOX protocol family
[  408.313433] l2tp_core: L2TP core driver, V2.0
[  408.314817] l2tp_ppp: PPPoL2TP kernel driver, V2.0
[  412.591492] iperf3 (11377) used greatest stack depth: 11528 bytes left
[  412.637397] ppp0: recursion detected
[  413.651944] ppp0: recursion detected