[  856.868489][T12961] PPP generic driver version 2.4.2
[  856.874600][T12961] NET: Registered PF_PPPOX protocol family
[  856.898819][T12961] l2tp_core: L2TP core driver, V2.0
[  856.904854][T12961] l2tp_ppp: PPPoL2TP kernel driver, V2.0
[  862.139109][T13033] ppp0: recursion detected
[  863.203714][T12993] ppp0: recursion detected
[  863.364765][T12993] xl2tpd (12993) used greatest stack depth: 22672 bytes left