[  873.643829][T11156] PPP generic driver version 2.4.2
[  873.649930][T11156] NET: Registered PF_PPPOX protocol family
[  873.668301][T11156] l2tp_core: L2TP core driver, V2.0
[  873.678138][T11156] l2tp_ppp: PPPoL2TP kernel driver, V2.0
[  878.819515][T11234] ppp0: recursion detected
[  878.942156][    C0] ppp0: recursion detected
[  879.872278][T11195] ppp0: recursion detected
[  880.049899][T11195] xl2tpd (11195) used greatest stack depth: 22192 bytes left