[  838.973858][T10270] PPP generic driver version 2.4.2
[  838.980720][T10270] NET: Registered PF_PPPOX protocol family
[  839.022595][T10270] l2tp_core: L2TP core driver, V2.0
[  839.030845][T10270] l2tp_ppp: PPPoL2TP kernel driver, V2.0
[  844.157404][T10339] iperf3 (10339) used greatest stack depth: 22736 bytes left
[  844.292957][T10343] ppp0: recursion detected
[  845.348326][T10308] ppp0: recursion detected