MAC address does not show up on the telco's ARP table caches

Oct 04, 2005 1 Replies

// __ 20050915 14:15 Hi,



I am using as ISP that uses the telephone/DSL network from the local telco to provide their clients with broadband/DSL access (they do provide a better/marginally cheaper service).



The thing is that I am repeatedly (and way too often) kicked off the net in ways that even my ISP tech suppost considers to be "very strange"



I know I am connected to the Net because if I run ethereal setting my card on promiscuos mode (I am connecting to the Net directly), I can see the whole traffic of what is going on on my domain. I must be a heck of a guesser to make up an ethereal ethernet traffic log.



They have told me things like:



._ your MAC address does not show on the telco's cache.



._ your MAC does temporarily show on their ARP table cache sometimes(?!), but as an imcomplete address



._ their ARP tables also show lots of different MAC addresses assigned to you that are actually not yours



Also my ISP has a procedure to refresh your NIC's MAC addresses that I have used to no avail. I have even tried using dirrent NICs on X86 boxes and even a Mac.



What could be the 'technical' reasons why this could be happening?



Thanks dennishartman



In comp.security.firewalls dennishartman wrote: [loosing connectivity]

This your provider must find out. This is much too less information to help.

Yours, VB.

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