[  892.339729][T11342] PPP generic driver version 2.4.2
[  892.345473][T11342] NET: Registered PF_PPPOX protocol family
[  892.361598][T11342] l2tp_core: L2TP core driver, V2.0
[  892.370393][T11342] l2tp_ppp: PPPoL2TP kernel driver, V2.0
[  897.599058][T11423] iperf3 (11423) used greatest stack depth: 22592 bytes left
[  897.782324][T11427] ppp0: recursion detected
[  898.852236][T11379] ppp0: recursion detected