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Author SHA1 Message Date
Kristoffer Dalby 220e9eec6a state, change: notify clients only of effective node changes 
Send endpoint and DERP reports only to peers. Suppress redundant online,
policy, and key updates on reconnect or unchanged-key login.
 2026-11-02 17:46:54 +00:00
Kristoffer Dalby f5fb3ca196 policy/v2, mapper: align NextDNS warnings and device metadata 
Warn about malformed attributes once at policy load, not on each map.
Include the node's stable ID as device_id in resolver queries.
 2026-11-02 17:46:54 +00:00
Kristoffer Dalby 0fa4b93b09 mapper: test that a hidden peer's policy change still sends filters 2026-11-02 17:46:53 +00:00
Kristoffer Dalby 077dd5b11d state, change: send a deleted node's removal only to its peers 
The removal went to every node, also those the policy hid the node from.
The delete now returns the node's peers from the snapshot it replaces.
 2026-11-02 17:46:53 +00:00
Kristoffer Dalby 5ecc365050 mapper: stop an older initial map removing peers newer streams hold 
AddNode diffed its map against tracking after sending it, when a newer
stream may have recorded its own; it now sends the node a full instead.
 2026-11-02 17:46:53 +00:00
Kristoffer Dalby 78b807ac44 mapper: bound how long one node can block a batcher worker 
A node that drained slower than it was sent to held the worker for its
whole bundle; once its sends have waited 50ms, the rest waits a tick.
 2026-11-02 17:46:53 +00:00
Kristoffer Dalby ca5fc62312 mapper: bound concurrent streams and wait for their initial maps 
The fifth stream replaces the oldest. Retry changes while any stream
awaits its initial map so ready streams cannot consume another's update.
 2026-11-02 17:46:53 +00:00
Kristoffer Dalby 3ede93947a change: coalesce policy recomputes that carry an origin node 
The recompute render ignores the origin and always carries the node's
own entry, so a burst of tag writes cost every node one per write.
 2026-11-02 17:46:53 +00:00
Kristoffer Dalby 3bd17903e0 state: say a taken name is already taken 2026-11-02 17:46:53 +00:00
Kristoffer Dalby c23a6efa73 db: succeed on a repeated revoke of an auth key 
A repeated v2 DELETE of an auth key now answers 200, as Tailscale does.
 2026-11-02 17:46:53 +00:00
Kristoffer Dalby 61107c0c4f auth: answer a logout that deletes an ephemeral node as authorised 2026-11-02 17:46:53 +00:00
Kristoffer Dalby 6b07f3c17a cli: show a node's own ephemeral flag instead of its key's 2026-11-02 17:46:53 +00:00
Kristoffer Dalby 84b0d0966c gen/client/v1: regenerate for the node ephemeral flag 2026-11-02 17:46:53 +00:00
Kristoffer Dalby bccfb46ab1 db, state: keep the ephemeral flag a node was created with 
The flag moves from the key to the node, so a login with another key no
longer changes it. A user claiming a tagged node still clears it. v1
nodes carry the flag.

Fixes #3640
 2026-11-02 17:46:53 +00:00
Kristoffer Dalby 5827e4b73c db, types: add a nodes column for the ephemeral flag 
The migration fills it from the key each node references.
 2026-11-02 17:46:53 +00:00
Kristoffer Dalby 95efb8cef1 state: assign and persist unique node names in the NodeStore 
Reserve extra DNS names, fit collision suffixes within 63 bytes, and repair
duplicate startup names in memory. Persist registration names without
losing a created node on rename failure; remove unused DB renaming.
 2026-11-02 17:46:53 +00:00
Kristoffer Dalby 77874782ca db, api/v1: revoke rather than delete an ephemeral pre-auth key in use 
The v1 list now hides revoked keys, so keys revoked through v2 also drop
out of `headscale preauthkeys list`.
 2026-11-02 17:46:53 +00:00
Kristoffer Dalby c7b9b15c90 hscontrol: track ephemeral cleanup from registration to ownership changes 
Arm cleanup at pre-auth registration, even if later work fails or the node
never connects. Skip deletion when the node is no longer ephemeral.
 2026-11-02 17:46:53 +00:00
Kristoffer Dalby 8d3f800725 db: wrap the sequential IP allocator so freed addresses are reused 2026-11-02 17:46:53 +00:00
Kristoffer Dalby 598b4c53c3 state: test that a persist racing a delete cannot resurrect the node 
DeleteNode's early persistMu unlock is safe only while node persists
stay UPDATE-only; say so where the lock is declared.
 2026-11-02 17:46:53 +00:00
Kristoffer Dalby ab11fcbf32 hscontrol: bound client-chosen text in request logs 
Clip at the sinks: handler errors, the request line, SSH local_user.
 2026-11-02 17:46:53 +00:00
Kristoffer Dalby 9531124eea mapper: show an expired peer online, without endpoints or DERP 
A connected expired node shows online to its peers. Neither its map
entry nor endpoint, DERP or disco patches carry the paths to reach it.
 2026-11-02 17:46:53 +00:00
Kristoffer Dalby b65d4ac185 mapper: trim the Hostinfo sent to peers and to the node itself 
As on Tailscale SaaS, the node's own entry keeps Hostname, RequestTags,
RoutableIPs and Services; peers get Hostname, OS, Services without
peerapi-dns-proxy, SSH host keys and AppConnector, and resend on those.
 2026-11-02 17:46:53 +00:00
Kristoffer Dalby 360b8acfd2 mapper: keep an expired node authorised in its own entry 
Tailscale SaaS sends an expired node MachineAuthorized and no Expired
flag; its past KeyExpiry already moves the client to NeedsLogin.
 2026-11-02 17:46:53 +00:00
Kristoffer Dalby 433e96af96 .github: regenerate integration test workflow 2026-11-02 17:46:53 +00:00
Kristoffer Dalby bec665726c state: apply requested tags on a key login that owns them 
A requested tag the key's user owns directly, or the key's tags own one
hop away, replaces the key's tags instead of refusing the login.
 2026-11-02 17:46:53 +00:00
Kristoffer Dalby e878b081c6 state: maintain auto-approvals across route and tag changes 
Withdrawal removes approvals granted only by policy; manual and migrated
approvals remain. Recheck routes after policy learns an administrator's
new tags.
 2026-11-02 17:46:53 +00:00
Kristoffer Dalby 644c88b1e6 db, types: add a column for auto-approved routes 
It starts empty: the current policy cannot tell which earlier approvals
were automatic, so all of them stay as an admin's.
 2026-11-02 17:46:53 +00:00
Kristoffer Dalby 725aa0aeeb state: auto-approve on registration only when the node key rotates 
Registration runs the approval itself, once the policy manager knows the
node's owner, for a new node key or a change to the announced routes.
 2026-11-02 17:46:53 +00:00
Kristoffer Dalby 3480d6fa0f auth, state: preserve client expiry and require expired node key rotation 
Return NodeKeyExpired for same-key login so the client rotates its key;
the machine stays authorized. Store earlier client expiry and expire
tagged nodes at logout.
 2026-11-02 17:46:53 +00:00
Kristoffer Dalby ab4596f40a state: invalidate SSH check approvals on owner changes and expiry 
Honor approval only while its source keeps the same owner and is live.
 2026-11-02 17:46:52 +00:00
Kristoffer Dalby 343680c092 state: let a pre-auth key that is no longer valid only wake its node 
A login that keeps its node key leaves a live node's expiry alone, even
with a valid key, and a wake-up is not refused for the tags it requests.
 2026-11-02 17:46:52 +00:00
Kristoffer Dalby 4f7c8ec32a state: serialise registrations presenting an unused single-use key 2026-11-02 17:46:52 +00:00
Kristoffer Dalby 1449fa9f84 state: auto-approve routes in the NodeStore writer, not on reload 
Registration approval runs on the node the writer replaces. A policy
reload approves nothing, and a map request only when its announced
routes change, so neither re-grants a route an admin revoked.
 2026-11-02 17:46:52 +00:00
Kristoffer Dalby 67bdb685d8 state: persist current NodeStore rows and roll back only failed writes 
Read current NodeStore rows under persistMu. Roll back only fields still
matching the failed registration, preserving concurrent node changes.
 2026-11-02 17:46:52 +00:00
Kristoffer Dalby cee821f349 state: apply map requests only under the node key that authorised them 2026-11-02 17:46:52 +00:00
Kristoffer Dalby 0e1140c710 policy: offer exit routes only to viewers whose rules reach the internet 
Every destination overlaps /0, so any rule offered a peer's exit routes.
They now need a rule to the internet, the test exit-node visibility
uses; via steering defers them to a regular grant only on that test.
 2026-11-02 17:46:52 +00:00
Kristoffer Dalby e0c9ff425e mapper: send a router all of its own routes 
Its AllowedIPs held only the primaries the policy let it reach. It now
holds every approved route, and PrimaryRoutes the ones it serves.

Fixes #3626
 2026-11-02 17:46:52 +00:00
Kristoffer Dalby a49f9122f7 policy: reduce merged destination prefixes to the node's own addresses 
Adjacent node addresses merge into one prefix, and each node's filter
kept all of it. A prefix made only of node addresses now shrinks to the
node's own; a prefix the policy wrote, or one the node routes, stays.
 2026-11-02 17:46:52 +00:00
Kristoffer Dalby 8c3b615bda api, policy/v2: refuse route prefixes with host bits 
Routes are matched as written, so such a prefix never equals the one a
client announces. The approval APIs answer 400 and autoApprovers refuses
it at load and write, with Tailscale's text.
 2026-11-02 17:46:52 +00:00
Kristoffer Dalby fc8a12c950 policy, state: log only the routes auto-approval adds 2026-11-02 17:46:52 +00:00
Kristoffer Dalby 048fcefbdb poll: hold the map session's node as a view 2026-11-02 17:46:52 +00:00
Kristoffer Dalby 691d9d6b1e policy/matcher: compare cached policy and node route ranges 
Binary-search immutable policy ranges and normalize node routes once.
Large misses and self/via scans improve; small or early matches can slow,
and global policies pay extra normalization and allocation costs.
 2026-11-02 17:46:52 +00:00
Kristoffer Dalby e72476f0ae policy: look up approved routes in a set when auto-approving 
Avoid scanning the growing approval list for every announcement.
Use the sorted current routes when identifying additions.
 2026-11-02 17:46:52 +00:00
Kristoffer Dalby 1ea702cdbe types, state: derive and reduce approved routes once 
Derive subnet and exit routes together, once each in announcement order.
Reuse matcher membership while preserving HA co-router visibility.
 2026-11-02 17:46:52 +00:00
Kristoffer Dalby 5fd173178f state, policy/v2: classify only effective route changes 
Compare announced-and-approved routes only when immutable route inputs
change. Publish Hostinfo without unnecessary peer adjacency rebuilds.
 2026-11-02 17:46:52 +00:00
Kristoffer Dalby edbb1fe9b6 policy/v2, state: elect primaries by oldest control session 
A router that reconnects joins as a standby; one that kept its session
takes its routes back once available again, as on Tailscale. Both the
global and the via election use it, in place of anti-flap stickiness.
 2026-11-02 17:46:52 +00:00
Kristoffer Dalby 7e5aa85601 types: add when a node's run of control sessions began 2026-11-02 17:46:52 +00:00
Kristoffer Dalby de8a0cc7eb state, policy/v2: elect available routers and retain unavailable routes 
Recompute via elections on health changes and check online state and expiry.
With no available router, retain the previous primary or lowest-ID approver;
exclude routers the prober marked unreachable.
 2026-11-02 17:46:52 +00:00
Kristoffer Dalby 1c94588bf9 state: keep HA health probes active without delaying unrelated routers 
Probe lone unhealthy advertisers. Defer results only for routers whose
routes tie them to a router still awaiting its probe.
 2026-11-02 17:46:51 +00:00