Dear Bj”rn,

03 May 19 21:46, you wrote to All:

 BF>    I've been given an IP4 number from my provider in the third of four
 BF> /26 subnets. I.e. I have x.x.x.157 with a subnet mask of
 BF> 255.255.255.192 and, of course, default gateway x.x.x.129

 BF>    I suppose the other 61 IP numbers in my subnet have been reserved
 BF> mainly to my neighbours. Maybe not necessarily, but probably, no?

 BF>    If so, if I find out that one of the other 61 IP numbers was given
 BF> to my neighbour friend, wouldn't it be possible to connect directly to
 BF> his computer without having to go via the default gateway?

 BF>    Wouldn't that mean that we then can have direct fiber connection
 BF> without the artificial speed restrictions that our respective
 BF> subscription results in?

Many ISPs prevent direct (that is Layer 2) communication between residential 
customers, for various reasons. I would not be surprised if you and each of 
your neighbors are placed in personal VLANs or something like that.

Victor Sudakov, VAS4-RIPE, VAS47-RIPN
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