agnwsta paketa - DOD den douleyei

[Alexandros Papadopoulos]

Geia sas paidia.

Anoigw mia ISDN syndesh me thn Compulink, kanw ligh douleia, kai meta kleinw 
ta panta (apo applications) kai parathrw oti h syndesh (pppd se DOD mode) den 
peftei aytomata. Me ena tcpdump -i ppp0 akoume ta ekshs:

02:59:54.270466 tc-1-1.compulink.gr > IGRP-ROUTERS.MCAST.net: ip-proto-88 40 
[tos 0xc0]
02:59:54.271986 ppp154-94.compulink.gr.32787 > hermes.compulink.gr.domain: 
40355+ PTR? 10.0.0.224.in-addr.arpa. (41) (DF)
02:59:54.380464 hermes.compulink.gr.domain > ppp154-94.compulink.gr.32787: 
40355 1/3/4 PTR IGRP-ROUTERS.MCAST.net. (214)
02:59:54.380976 ppp154-94.compulink.gr.32787 > hermes.compulink.gr.domain: 
40356+ PTR? 3.129.242.195.in-addr.arpa. (44) (DF)
02:59:54.480464 hermes.compulink.gr.domain > ppp154-94.compulink.gr.32787: 
40356* 1/3/3 PTR tc-1-1.compulink.gr. (190)
02:59:54.480874 ppp154-94.compulink.gr.32787 > hermes.compulink.gr.domain: 
40357+ PTR? 105.129.242.195.in-addr.arpa. (46) (DF)
02:59:54.580466 hermes.compulink.gr.domain > ppp154-94.compulink.gr.32787: 
40357* 1/3/3 PTR hermes.compulink.gr. (185)
02:59:54.580834 ppp154-94.compulink.gr.32787 > hermes.compulink.gr.domain: 
40358+ PTR? 94.154.242.195.in-addr.arpa. (45) (DF)
02:59:54.680465 hermes.compulink.gr.domain > ppp154-94.compulink.gr.32787: 
40358* 1/3/3 PTR ppp154-94.compulink.gr. (194)
02:59:59.230463 tc-1-1.compulink.gr > IGRP-ROUTERS.MCAST.net: ip-proto-88 40 
[tos 0xc0]
03:00:03.520477 tc-1-1.compulink.gr > IGRP-ROUTERS.MCAST.net: ip-proto-88 40 
[tos 0xc0]
03:00:08.210462 tc-1-1.compulink.gr > IGRP-ROUTERS.MCAST.net: ip-proto-88 40 
[tos 0xc0]
03:00:12.840464 tc-1-1.compulink.gr > IGRP-ROUTERS.MCAST.net: ip-proto-88 40 
[tos 0xc0]
03:00:17.130463 tc-1-1.compulink.gr > IGRP-ROUTERS.MCAST.net: ip-proto-88 40 
[tos 0xc0]
03:00:21.610473 tc-1-1.compulink.gr > IGRP-ROUTERS.MCAST.net: ip-proto-88 40 
[tos 0xc0]
03:00:26.300460 tc-1-1.compulink.gr > IGRP-ROUTERS.MCAST.net: ip-proto-88 40 
[tos 0xc0]
03:00:31.260474 tc-1-1.compulink.gr > IGRP-ROUTERS.MCAST.net: ip-proto-88 40 
[tos 0xc0]
03:00:36.080464 tc-1-1.compulink.gr > IGRP-ROUTERS.MCAST.net: ip-proto-88 40 
[tos 0xc0]
03:00:40.520465 tc-1-1.compulink.gr > IGRP-ROUTERS.MCAST.net: ip-proto-88 40 
[tos 0xc0]
03:00:45.200465 tc-1-1.compulink.gr > IGRP-ROUTERS.MCAST.net: ip-proto-88 40 
[tos 0xc0]

Ti einai ayta ta paketa kai pws mporw na ta kopsw?

TIA

-A