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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
Download Patch File Download Diff File Expand all files Collapse all files
easytier/src/launcher.rs
+24
View File
@@ -714,6 +714,24 @@ impl NetworkConfig {
flags.use_smoltcp = use_smoltcp;
}
if let Some(ipv6_public_addr_provider) = self.ipv6_public_addr_provider {
cfg.set_ipv6_public_addr_provider(ipv6_public_addr_provider);
}
if let Some(ipv6_public_addr_auto) = self.ipv6_public_addr_auto {
cfg.set_ipv6_public_addr_auto(ipv6_public_addr_auto);
}
if let Some(ipv6_public_addr_prefix) = self
.ipv6_public_addr_prefix
.as_ref()
.filter(|prefix| !prefix.is_empty())
{
cfg.set_ipv6_public_addr_prefix(Some(ipv6_public_addr_prefix.parse().with_context(
|| format!("failed to parse ipv6 public address prefix: {ipv6_public_addr_prefix}"),
)?));
}
if let Some(disable_ipv6) = self.disable_ipv6 {
flags.enable_ipv6 = !disable_ipv6;
}
@@ -863,6 +881,12 @@ impl NetworkConfig {
result.network_length = Some(ipv4.network_length() as i32);
}
result.ipv6_public_addr_provider = Some(config.get_ipv6_public_addr_provider());
result.ipv6_public_addr_auto = Some(config.get_ipv6_public_addr_auto());
result.ipv6_public_addr_prefix = config
.get_ipv6_public_addr_prefix()
.map(|prefix| prefix.to_string());
let peers = config.get_peers();
result.networking_method = Some(NetworkingMethod::Manual as i32);
if !peers.is_empty() {