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feat: support allocating public IPv6 addresses from a provider

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Add a provider/leaser architecture for public IPv6 address allocation
between nodes in the same network:

- A node with `--ipv6-public-addr-provider` advertises a delegable
  public IPv6 prefix (auto-detected from kernel routes or manually
  configured via `--ipv6-public-addr-prefix`).
- Other nodes with `--ipv6-public-addr-auto` request a /128 lease from
  the selected provider via a new RPC service (PublicIpv6AddrRpc).
- Leases have a 30s TTL, renewed every 10s by the client routine.
- The provider allocates addresses deterministically from its prefix
  using instance-UUID-based hashing to prefer stable assignments.
- Routes to peer leases are installed on the TUN device, and each
  client's own /128 is assigned as its IPv6 address.

Also includes netlink IPv6 route table inspection, integration tests,
and event-driven route/address reconciliation.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
This commit is contained in:
sijie.sun
2026-04-25 20:25:42 +08:00
parent b20075e3dc
commit 7908f9c146
21 changed files with 2807 additions and 28 deletions
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easytier/src/proto/api_manage.proto
+3
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@@ -96,6 +96,9 @@ message NetworkConfig {
optional bool need_p2p = 59;
optional uint64 instance_recv_bps_limit = 60;
optional bool disable_upnp = 61;
optional bool ipv6_public_addr_provider = 62;
optional bool ipv6_public_addr_auto = 63;
optional string ipv6_public_addr_prefix = 64;
}
message PortForwardConfig {