BCP38 is hard, was TWC (AS11351) blocking all NTP?

Randy Bush randy at psg.com
Wed Feb 5 01:13:41 UTC 2014

>> How does the customer do that in a way that scales?
> You implement SIDR to the extent where you issue your multi homed
> customers CERTs for the address space you allocated to them.  The
> customer can then just send signed requests to a automated service
> at the other ISPs along with the CERT which then builds the filters
> based on that information after verifying the CERTs authenticity.

you have done this in your network, the isp for which you are an


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