Suddenly behind CGNAT and options for getting around it.

Have been able to get to my network's public IP for a long time now on comcast, one reason that I have stayed with them over the years.  Suddenly, this weekend, I am not able to connect to my network at all.  Looking up my ip address from external sites show a different IP than the one at my router.   Also, noticed that my tracert shows me behind a 100.99.x.x ip, so I'm assuming that this is new this weekend.

tracert www.google.com

Tracing route to www.google.com [142.250.80.36]
over a maximum of 30 hops:

  1    <1 ms    <1 ms    <1 ms  spike1.pinecabin.net [192.168.1.1]
  2    11 ms    10 ms     9 ms  100.93.224.219
  3    10 ms    10 ms     7 ms  po-56-rur302.bethelpark.pa.pitt.comcast.net [96.110.213.133]
  4    11 ms    10 ms    11 ms  po-300-xar02.bethelpark.pa.pitt.comcast.net [96.110.2.173]
  5    10 ms    16 ms    11 ms  be-53-ar01.mckeesport.pa.pitt.comcast.net [96.216.140.105]
  6    14 ms    17 ms    11 ms  be-31641-cs04.pittsburgh.pa.ibone.comcast.net [96.110.42.173]
  7    11 ms    11 ms    12 ms  be-1411-cr11.pittsburgh.pa.ibone.comcast.net [96.110.38.142]
  8    16 ms    16 ms    17 ms  be-304-cr12.beaumeade.va.ibone.comcast.net [96.110.39.149]
  9    19 ms    18 ms    16 ms  be-1312-cs03.beaumeade.va.ibone.comcast.net [68.86.84.153]

Is there a way I can NOT be behind this besides paying for a VPS and routing everything through that?  Barring that, any way to get any help with IPv6 for my home network?