Re: [lwip-users] lwip2.0.2 l2tp question

[odobryabov]

We don't use IPSec on our server.
I also turned on udp and IP debug. Logs of these frames:
udp_input: received datagram of length 28
UDP header:
+-------------------------------+
|      1701     |     49154     | (src port, dest port)
+-------------------------------+
|        28     |     0x0000    | (len, chksum)
+-------------------------------+
udp (192.168.15.20, 49154) <-- (192.168.15.2, 1701)
pcb (0.0.0.0, 49154) <-- (0.0.0.0, 0)
pcb (0.0.0.0, 1200) <-- (0.0.0.0, 0)
pcb (0.0.0.0, 161) <-- (0.0.0.0, 0)
pcb (0.0.0.0, 69) <-- (0.0.0.0, 0)
udp_input: calculating checksum
pppol2tp: input packet, len=0, tunnel=5701, session=35356, ns=0, nr=0
udp_send: added header in given pbuf 0x2000cd94
udp_send: sending datagram of length 26
udp_send: UDP packet length 26
udp_send: UDP checksum 0xfd4c
udp_send: ip_output_if (,,,,0x11,)
udp_input: received datagram of length 28

ip4_output_if: st0
IP header:
+-------------------------------+
| 4 | 5 |  0x00 |        46     | (v, hl, tos, len)
+-------------------------------+
|       43      |000|       0   | (id, flags, offset)
+-------------------------------+
|  255  |   17  |    0x1c2d     | (ttl, proto, chksum)
+-------------------------------+
|  192  |  168  |   15  |   20  | (src)
+-------------------------------+
|  192  |  168  |   15  |    2  | (dest)
+-------------------------------+
ip4_output_if: call netif->output()
ip_input: iphdr->dest 0x140fa8c0 netif->ip_addr 0x140fa8c0 (0xfa8c0,
0xfa8c0, 0x14000000)
ip4_input: packet accepted on interface st
ip4_input: 
IP header:
+-------------------------------+
| 4 | 5 |  0x00 |        48     | (v, hl, tos, len)
+-------------------------------+
|    12882      |000|       0   | (id, flags, offset)
+-------------------------------+
|   64  |   17  |    0xa904     | (ttl, proto, chksum)
+-------------------------------+
|  192  |  168  |   15  |    2  | (src)
+-------------------------------+
|  192  |  168  |   15  |   20  | (dest)
+-------------------------------+
ip4_input: p->len 48 p->tot_len 48
pppol2tp: input packet, len=0, tunnel=53427, session=47857, ns=0, nr=0

Could anybody send here a successful log of l2tp connection?



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