We've discovered issues with UDP traffic going to our bootnodes via the Digital Ocean Floating IPs. According to DO "Floating IP" is:
Floating IP is an IP address that can be instantly moved from one Droplet to another Droplet in the same datacenter.
- Anchor IP - Default internal IP given to a dropplet in 10.0.0.0/8 subnets.
- Dropplet IP - Default public IP given to a dropplet on creation.