Networking off net (cable ISP) failure

Svn 22897 in real hardware .
Since I moved from a DSL connection to an Internat cable connection , the access to internet fails :

I can ping the Ip address of the default Gateway
I cannot Telnet www.laposte.net for example ( that works with win xp)

Note : Ping is filtered by the Cable Isp so it cannot be used off-net , Telnet is OK

1) Telnet traces on Ros ( telnet pop.laposte.net 110)

PC -> DNS pop.lapote.net

• • • PACKET START ***
      0000 00 0E 0C 5A C1 F3 00 10 A7 13 97 61
      000C 08 00 45 00 00 3D 00 00 00 00 80 11
      0018 C4 EB 0A 3F 00 F8 CA 86 A0 07 80 01
      0024 00 35 00 29 00 00 31 1F 01 00 00 01
      0030 00 00 00 00 00 00 03 70 6F 70 02 38 POP.?
      003C 31 03 32 35 *** PACKET STOP ***
    • RECEIVE PACKET START ***
      HEADER:
      0000 FF FF FF FF FF FF 00 03 47 C1 72 E5 08 06
      FRAME:
      0000 00 01 08 00 06 04 00 01 00 03 47 C1 72 E5 CA 86
      0010 A5 01 00 00 00 00 00 00 CA 86 A5 56 00 00 00 00
      0020 00 00 00 00 00 00 00 00 00 00 00 00 00 00
    • RECEIVE PACKET STOP ***

DNS -> PC

• • • RECEIVE PACKET START ***
      HEADER:
      0000 00 10 A7 13 97 61 00 0E 0C 5A C1 F3 08 00
      FRAME:
      0000 45 00 00 88 00 00 40 00 3F 11 C5 A0 CA 86 A0 07
      0010 0A 3F 00 F8 00 35 80 01 00 74 0E B4 31 1F 81 83
      0020 00 01 00 00 00 01 00 00 03 70 6F 70 02 38 31 03
      0030 32 35 35 02 35 34 01 38 00 00 01 00 01 00 00 06
    • RECEIVE PACKET STOP ***

Note : The ASCII codes of the URL seems to be wrong

00 01 00 00 00 01 00 00 03 70 6F 70 02 38 31 03
P O P . L A .
0030 32 35 35 02 35 34 01 38 00 00 01 00 01 00 00 06
O S T E . N E T

2) Telnet traces on Win XP ( telnet pop.laposte.net 110)

1) DNS Query pop.laposte.net - PC -> DNS

0000 00 0e 0c 5a c1 f3 00 10 a7 13 97 61 08 00 45 00 ...Z.... ...a..E.
0010 00 3d 8d 6c 00 00 80 11 37 7f 0a 3f 00 f8 ca 86 .=.l.... 7..?....
0020 a0 07 0c 15 00 35 00 29 51 80 00 94 01 00 00 01 .....5.) Q.......
0030 00 00 00 00 00 00 03 70 6f 70 07 6c 61 70 6f 73 .......p op.lapos
0040 74 65 03 6e 65 74 00 00 01 00 01 te.net.. ...

2) DNS query response 81.255.54.8 - DNS -> PC

0000 00 10 a7 13 97 61 00 0e 0c 5a c1 f3 08 00 45 00 .....a.. .Z....E.
0010 00 5f 00 00 40 00 3f 11 c5 c9 ca 86 a0 07 0a 3f ._..@.?. .......?
0020 00 f8 00 35 0b cd 00 4b 6f 0d 00 49 81 80 00 01 ...5...K o..I....
0030 00 01 00 01 00 00 03 70 6f 70 07 6c 61 70 6f 73 .......p op.lapos
0040 74 65 03 6e 65 74 00 00 01 00 01 c0 0c 00 01 00 te.net.. ........
0010 00 5f 00 00 40 00 3f 11 c5 c9 ca 86 a0 07 0a 3f ._..@.?. .......?
0020 00 f8 00 35 0b cd 00 4b 6f 0d 00 49 81 80 00 01 ...5...K o..I....
0030 00 01 00 01 00 00 03 70 6f 70 07 6c 61 70 6f 73 .......p op.lapos
0040 74 65 03 6e 65 74 00 00 01 00 01 c0 0c 00 01 00 te.net.. ........
0050 01 00 00 01 2c 00 04 <<51 ff 36 08>> c0 0c 00 02 00 ....,..Q .6......
0060 01 00 00 02 58 00 06 03 6c 70 31 c0 10 ....X... lp1..

0050 01 00 00 01 2c 00 04 51 ff 36 08 c0 0c 00 02 00 ....,..Q .6......
0060 01 00 00 02 58 00 06 03 6c 70 31 c0 10 ....X... lp1..

3) SYN www.laposte.net - PC -> POP

0000 00 0e 0c 5a c1 f3 00 10 a7 13 97 61 08 00 45 00 ...Z.... ...a..E.
0010 00 30 8d 73 40 00 80 06 da 16 0a 3f 00 f8 51 ff .0.s@... ...?..Q.
0020 36 08 0c cc 00 6e 94 cf ee 0b 00 00 00 00 70 02 6....n.. ......p.
0030 ff ff 5f cc 00 00 02 04 05 b4 01 01 04 02 .._..... ......

4) SYN ACK - POP -> PC

0000 00 0e 0c 5a c1 f3 00 10 a7 13 97 61 08 00 45 00 ...Z.... ...a..E.
0010 00 30 8d 73 40 00 80 06 da 16 0a 3f 00 f8 51 ff .0.s@... ...?..Q.
0020 36 08 0c cc 00 6e 94 cf ee 0b 00 00 00 00 70 02 6....n.. ......p.
0030 ff ff 5f cc 00 00 02 04 05 b4 01 01 04 02 .._..... ......

5) ACK - PC -> POP

0000 00 0e 0c 5a c1 f3 00 10 a7 13 97 61 08 00 45 00 ...Z.... ...a..E.
0010 00 28 8d 7a 40 00 80 06 da 17 0a 3f 00 f8 51 ff .(.z@... ...?..Q.
0020 36 08 0c cc 00 6e 94 cf ee 0c d9 58 fc d5 50 10 6....n.. ...X..P.
0030 ff ff b6 51 00 00 ...Q..

6) Response - POP -> PC

0000 00 10 a7 13 97 61 00 0e 0c 5a c1 f3 08 00 45 00 .....a.. .Z....E.
0010 00 85 76 28 40 00 2c 06 45 0d 51 ff 36 08 0a 3f ..v(@.,. E.Q.6..?
0020 00 f8 00 6e 0c cc d9 58 fc d5 94 cf ee 0c 50 18 ...n...X ......P.
0030 83 2c cd 7c 00 00 2b 4f 4b 20 50 4f 50 33 20 73 .,.|..+O K POP3 s
0040 65 72 76 65 72 20 72 65 61 64 79 20 28 37 2e 32 erver re ady (7.2
0050 2e 30 36 30 2e 31 29 20 3c 39 44 31 36 32 46 32 .060.1) <9D162F2
0060 45 35 46 41 36 35 38 35 38 34 35 43 38 35 30 36 E5FA6585 845C8506
0070 39 43 36 44 39 46 41 32 38 43 39 44 35 31 33 37 9C6D9FA2 8C9D5137
0080 33 40 6d 78 2e 6c 61 70 6f 73 74 65 2e 6e 65 74 3@mx.lap oste.net
0090 3e 0d 0a >..