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to-be 08: the found tunnel's configuration is retired once the take is proven (ADR 0119)

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jochen
2026-09-27 00:58:54 +02:00
parent 8a78ff4efe
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03-DESIGN/01-to-be/08-connectivity.md
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@@ -7,11 +7,12 @@ code:
- mesh-controller internal/identity/authority.go - mesh-controller internal/identity/authority.go
- mesh-host internal/identity/serving.go - mesh-host internal/identity/serving.go
- mesh-host internal/apply (the service that reflects a rule set) - mesh-host internal/apply (the service that reflects a rule set)
updated: 2026-09-25 updated: 2026-09-27
decisions: decisions:
- 02-DECISIONS/0104-a-provision-may-be-answered-by-an-adapter-to-the-predecessor.md - 02-DECISIONS/0104-a-provision-may-be-answered-by-an-adapter-to-the-predecessor.md
- 02-DECISIONS/0106-the-bus-is-nats.md - 02-DECISIONS/0106-the-bus-is-nats.md
- 02-DECISIONS/0105-the-mesh-adopts-the-predecessors-tunnel-in-place.md - 02-DECISIONS/0105-the-mesh-adopts-the-predecessors-tunnel-in-place.md
- 02-DECISIONS/0119-a-taken-tunnels-predecessor-is-retired.md
- 02-DECISIONS/0108-a-route-carries-the-policy-applied-to-a-request.md - 02-DECISIONS/0108-a-route-carries-the-policy-applied-to-a-request.md
- 02-DECISIONS/0103-what-an-adopted-node-holds-and-what-its-guard-refuses.md - 02-DECISIONS/0103-what-an-adopted-node-holds-and-what-its-guard-refuses.md
- 02-DECISIONS/0100-a-node-in-use-is-adopted-before-it-is-converged.md - 02-DECISIONS/0100-a-node-in-use-is-adopted-before-it-is-converged.md
@@ -768,6 +769,12 @@ where a found tunnel is left running beside the mesh's; where it is adopted ther
The guard admits the mesh's ports from that one interface, and the predecessor's peers arrive on The guard admits the mesh's ports from that one interface, and the predecessor's peers arrive on
it. it.
*2026-09-27, [ADR 0119](../../02-DECISIONS/0119-a-taken-tunnels-predecessor-is-retired.md).* The
found configuration is kept only until the take is proven — the found unit down, the mesh's
interface up and handshaking with a peer. Then it is removed from where the found unit reads it
(its original stays kept), the hold ends, and the predecessor's tunnel cannot be raised again by
anything but a person restoring it by hand. Undeclaring the private network does not bring it back.
## The bus is NATS ## The bus is NATS
*2026-09-23, [ADR 0106](../../02-DECISIONS/0106-the-bus-is-nats.md). Architecture to be written *2026-09-23, [ADR 0106](../../02-DECISIONS/0106-the-bus-is-nats.md). Architecture to be written