On 10/05/2012 09:42, James Chapman wrote:
>>> Unfortunately, the above statement isn't true. I'm seeing the same
>>> problems when using the config file. Here's what I do:
>>> 1. Disconnect LNS (I remove the ethernet cable)
>>> 2. Start openl2tpd
>>> 3. Wait a couple of minutes (session status changes from WAITTUNNEL to
>>> WAITREPLY during that time
>>> 4. Reconnect LNS
>>> 5. After a while the tunnel enters state ESTABLISHED but the session
>>> remains in state WAITREPLY (as discussed before).
>>>
>>
>> I also tried this on an x86 machine (instead of a MIPS) using the
>> official binaries from openl2tp.org. The behaviour is exactly the same.
>
> There's definitely a bug here. Persist is broken if the session fails to
> come up when it is initially created. If the session does come up and
> then goes down later, it is reestablished correctly when the link comes
> back up.
>
> We'll work on a fix for the next release.
Thanks James. That's exactly the behaviour I'm seeing here. I'll be very
happy to test a fix/patch/workaround/whatever here.
Also, I notice that openl2tpd crashes when one deletes the session while
it is in that WAITREPLY state.
l2tp> session show session_name=peter tunnel_name=peter
Session 1355 on tunnel 53860:-
type: LAC Incoming Call, state: WAITREPLY
created at: May 10 10:38:45 2012
administrative name: peter
created by admin: YES
ppp user name: amazon
ppp user password: amazon
ppp interface name: l2tp-peter
data sequencing required: OFF
use data sequence numbers: OFF
trace flags: PROTOCOL FSM API AVP AVPHIDE AVPDATA FUNC XPRT DATA PPP
SYSTEM
framing types: SYNC ASYNC
bearer types: DIGITAL ANALOG
call serial number: 1
connect speed: 1000000
use ppp proxy: NO
last peer response information:
result code: 10, error code: 0
Peer configuration data:-
data sequencing required: OFF
framing types:
bearer types:
call serial number: 1
data rx packets: 0, rx bytes: 0, rx errors: 0
data tx packets: 0, tx bytes: 0, tx errors: 0
l2tp> session delete session_name=peter tunnel_name=peter
localhost: RPC: Timed out
Error at or near 'delete'
XPRT: tunl 53860: retry failure
FSM: CCE(53860) event XPRT_DOWN in state WAITCTLREPLY
FUNC: tunl 53860: starting cleanup timer
FSM: CCE(53860) state change: WAITCTLREPLY --> CLOSING
59629/1355: creating UNIX pppd context
tunl 53860: scheduling recreate of persistent tunnel
FUNC: tunl 53860 deleted
59629/1355: creating UNIX pppd context
FSM: tunl 53860: establish timeout
FSM: CCE(53860) event CLOSE_REQ in state CLOSING
59629/1355: creating UNIX pppd context
FSM: LAIC(59629/1355) event CLOSE_REQ in state WAITREPLY
AVP: tunl 59629: building CDN message, 3 AVPs
PROTO: tunl 59629/1355: sending CDN to peer 0/0
Program received signal SIGSEGV, Segmentation fault.
0x0805dd1e in l2tp_xprt_send ()
(gdb) bt
#0 0x0805dd1e in l2tp_xprt_send ()
#1 0x08055446 in l2tp_net_send ()
#2 0x08061924 in ?? ()
#3 0x08066231 in ?? ()
#4 0x08077d7a in usl_fsm_handle_event ()
#5 0x08064dda in ?? ()
#6 0x08066a0a in l2tp_session_delete_1_svc ()
#7 0x0806b3a4 in _l2tp_session_delete_1 ()
#8 0x0806a7da in l2tp_prog_1 ()
#9 0x002323a1 in svc_getreq_common () from /lib/i386-linux-gnu/libc.so.6
#10 0x00232088 in svc_getreqset () from /lib/i386-linux-gnu/libc.so.6
#11 0x080699c1 in ?? ()
#12 0x0807645a in usl_fd_poll ()
#13 0x0807743d in usl_main_loop ()
#14 0x080510c5 in main ()
(gdb)
Thanks for looking into that,
Peter
--
Peter Hertting
Apeo Consulting
6 Belvedere Lawn
Douglas Road
Cork, Ireland
Phone: +353 21 4295904
Mobile: +353 86 1596329
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