[  905.099706][T11253] PPP generic driver version 2.4.2
[  905.118144][T11253] NET: Registered PF_PPPOX protocol family
[  905.137192][T11253] l2tp_core: L2TP core driver, V2.0
[  905.146286][T11253] l2tp_ppp: PPPoL2TP kernel driver, V2.0
[  910.278206][T11328] iperf3 (11328) used greatest stack depth: 22608 bytes left
[  910.471243][T11332] ppp0: recursion detected
[  911.534934][T11291] ppp0: recursion detected