Re: Sky Broadband + Linux

Dave Liquorice wrote:
On Thu, 19 Apr 2007 17:00:37 +0100, alexd wrote:

Especially as they have no way of knowing what the MAC address of your
router is, short of ringing you up and asking you.

eh? AIUI (maybe way off the mark) The MAC address is the layer 2 means by which packets are routed (simplistic). The remote device must know the MAC address or it wouldn't be able to send the layer 3 (IP) traffic to the right place.


No it's the other way round. MACs are only seen on your layer 2 LAN net. Routers use layer 3 - IP addresses. Your ISP does not know the MAC address of your kit (maybe PPPoE, but that would be the endpoint and most use PPPoA anyway).

What you/Whiskers may be thinking of, IIRC is that some isp (can't recall if it's sky or BT home hub) uses the MAC of their preconfigured router or something derived from it, as your ppp logon user name.

Cable may be different - I am talking about dsl ISPs

Andy.
.

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