I just noticed Cox appears to be using carrier grade NAT now on IPV4. The first hops after the CMTS are CGNAT addresses.
Tracing route to google-public-dns-a.google.com [8.8.8.8]over a maximum of 30 hops: 1 6 ms 7 ms 7 ms 10.4.128.1 2 8 ms 7 ms 7 ms 100.122.94.72 3 7 ms 7 ms 6 ms 100.122.93.64 4 21 ms 20 ms 19 ms paltbprj01-ae0.0.rd.pt.cox.net [68.1.0.234] 5 21 ms 21 ms 20 ms 72.14.214.214 6 19 ms 20 ms 20 ms 108.170.249.161 7 20 ms 23 ms 21 ms 108.170.234.43 8 20 ms 21 ms 21 ms google-public-dns-a.google.com [8.8.8.8]
This is a new development, when did it start? Is this part of the new DOCSIS 3.1 headend?
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