cocoon-net

VPC-native networking for Cocoon VM nodes. cocoon-net provisions cloud networking resources and runs an embedded DHCP server so VMs obtain VPC-routable IPs directly – no overlay network, no iptables DNAT, no external DHCP server dependency.

cocoon-net init          cocoon-net daemon
      |                        |
      v                        v
Cloud provisioning       Node setup (sysctl, bridge, iptables, CNI conflist)
(alias IPs / ENIs)             |
      |                        v
      v                  DHCP server on cni0
pool.json  <----------        |
                               v
                         On lease: add /32 route
                         On release: del /32 route

Guides

• Architecture – the two-phase model, the package layout (platform / pool / node / dhcp), CNI integration, and credentials
• Embedded DHCP server – lease lifecycle, the lease file, dynamic host routes, and VM traffic isolation (--drop-cidr)
• Configuration – every flag and environment variable, plus the pool.json state schema
• Installation – prebuilt binary, building from source, the systemd unit, and command usage
• GKE VPC-native networking – alias IP ranges, multi-node setup, troubleshooting
• Volcengine VPC-native networking – secondary ENI IPs, setup, troubleshooting

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