1) the default ACLs and route filters for the rather large ISP I used to
work for. Unfortunately I don't get a chance to work in the core of that
network, so I'm making a judgement on what was supposed to be the
practice rather than reality.
If you are filtering you will not see it...:)
2) I logged into router-server.cerf.net, couldn't find any network 10/8My experience is that it is pretty short lived once leaked as it get detected.
in the bgp and route tables, looked at their incoming BGP route filters,
they weren't filtering for it, so their upstream ASs looked to be
filtering it.
With the RFC1918 leaks you see, do they disappear pretty quickly afterYes. Look at the historic CIDR and "Philip Smith reports". They give a pretty good indication of what is floating around (looking at that normally tells you that RFC1918 space is not the worst problem...:) )
they appear, indicating somebody took action to stop the leak ? It would
also be interesting to see if the origin AS of these RFC1918 leaks is
one of the private ones.
- kurtis -
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