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Maniphest T2954

Use kernel mode L2TP in xl2tpd
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Description

In 1.2.x we utilized xl2tpd version 1.3.6+dfsg-2-vyos0 and it does not support kernel space

Oct  2 18:43:59 vyos xl2tpd[2339]: This binary does not support kernel L2TP.

When I build and install the package from https://github.com/xelerance/xl2tpd
It seems that it begins to use kernel modules

Oct  2 18:46:45 vyos xl2tpd[3053]: xl2tpd version xl2tpd-1.3.15 started on vyos PID:3053
Oct  2 18:46:45 vyos xl2tpd[3053]: Written by Mark Spencer, Copyright (C) 1998, Adtran, Inc.
Oct  2 18:46:45 vyos xl2tpd[3053]: Forked by Scott Balmos and David Stipp, (C) 2001
Oct  2 18:46:45 vyos xl2tpd[3053]: Inherited by Jeff McAdams, (C) 2002
Oct  2 18:46:45 vyos xl2tpd[3053]: Forked again by Xelerance (www.xelerance.com) (C) 2006-2016
Oct  2 18:46:45 vyos xl2tpd[3053]: Listening on IP address 0.0.0.0, port 1701


vyos@vyos#      lsmod | grep l2tp
l2tp_ppp               24576  0 
l2tp_netlink           20480  1 l2tp_ppp
l2tp_core              24576  2 l2tp_ppp,l2tp_netlink
ip6_udp_tunnel         12288  1 l2tp_core
udp_tunnel             12288  1 l2tp_core
pppox                  12288  1 l2tp_ppp
ppp_generic            36864  2 pppox,l2tp_ppp

Details

Difficulty level
Normal (likely a few hours)
Version
1.2.6-S1
Why the issue appeared?
Will be filled on close
Is it a breaking change?
Unspecified (possibly destroys the router)

Event Timeline

Unknown Object (User) created this task.Oct 2 2020, 7:00 PM
Unknown Object (User) added a comment.Oct 2 2020, 7:13 PM

Note: New xl2tpd package does not work with the followings params in options.xl2tpd

crtscts
lock

In log, we can see the output

In file /etc/ppp/options.xl2tpd: unrecognized option 'crtscts'
...
In file /etc/ppp/options.xl2tpd: unrecognized option 'lock'
pasik added a subscriber: pasik.Oct 3 2020, 5:52 PM
Unknown Object (User) triaged this task as Normal priority.Feb 7 2021, 9:15 PM
Unknown Object (User) changed Difficulty level from Unknown (require assessment) to Normal (likely a few hours).
Unknown Object (User) changed the task status from Open to Needs testing.Feb 8 2021, 10:25 AM
Unknown Object (User) edited projects, added VyOS 1.2 Crux (VyOS 1.2.7); removed VyOS 1.2 Crux.
dmbaturin renamed this task from xl2tp does not use kernel modules to Use kernel mode L2TP in xl2tpd.Feb 11 2021, 2:25 PM
dmbaturin closed this task as Resolved.
dmbaturin assigned this task to Unknown Object (User).
syncer moved this task from Needs Triage to Finished on the VyOS 1.2 Crux (VyOS 1.2.7) board.Jul 19 2021, 8:49 PM