Tracking issue for Q3 work on stabilizing the P2P layer.

• Specify the operation of the P2P layer in v0.34 #9089
  • Make a list of potential risks based on the spec work - capture as many of these as possible in issues
• Capture v0.34 baseline metrics #9123
• Stretch goal: go through p2p: internal refactor and architecture redesign #5670 to see whether any of the raised issues are applicable to v0.34 and could be addressed in this quarter