[  858.769514][T11252] PPP generic driver version 2.4.2
[  858.775487][T11252] NET: Registered PF_PPPOX protocol family
[  858.795628][T11252] l2tp_core: L2TP core driver, V2.0
[  858.802274][T11252] l2tp_ppp: PPPoL2TP kernel driver, V2.0
[  863.887631][T11327] iperf3 (11327) used greatest stack depth: 22576 bytes left
[  864.004769][T11331] ppp0: recursion detected
[  864.111645][    C2] ppp0: recursion detected
[  865.057194][T11290] ppp0: recursion detected