[  896.035123][T11241] PPP generic driver version 2.4.2
[  896.055612][T11241] NET: Registered PF_PPPOX protocol family
[  896.087549][T11241] l2tp_core: L2TP core driver, V2.0
[  896.095110][T11241] l2tp_ppp: PPPoL2TP kernel driver, V2.0
[  901.361189][T11315] iperf3 (11315) used greatest stack depth: 22768 bytes left
[  901.503494][T11319] ppp0: recursion detected
[  902.580126][T11279] ppp0: recursion detected