[  866.298363][T11250] PPP generic driver version 2.4.2
[  866.304464][T11250] NET: Registered PF_PPPOX protocol family
[  866.322771][T11250] l2tp_core: L2TP core driver, V2.0
[  866.330810][T11250] l2tp_ppp: PPPoL2TP kernel driver, V2.0
[  871.392908][T11325] iperf3 (11325) used greatest stack depth: 22768 bytes left
[  871.503058][T11329] ppp0: recursion detected
[  871.773804][    C2] ppp0: recursion detected
[  872.573557][T11290] ppp0: recursion detected