jschoubben
cb2117f1c4
Two birth-address outages and a registry that would have been the third; a container that keeps a stale environment after its file changes; a host command that applied a converged declaration to an adopted node; the hub and the vault without seats. And the decision the operator made under it all: the hub adopts the predecessor's tunnel in place, key and peers and range and port.
35 lines
1.5 KiB
Markdown
35 lines
1.5 KiB
Markdown
---
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status: open
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opened: 2026-09-23
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located-in: []
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fixed-by:
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amended-design:
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---
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# 105 — The hub of the private network is a placement, not a seat
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## What was observed
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Reading the registry of a one-node mesh, 2026-09-23. The private network claims a seat,
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`the-private-network`, scoped to the **node** — because every node has an interface and a
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mesh-scoped seat would refuse the second machine. The fact that matters, *which node is the hub the
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others rendezvous at*, is a placement record (`overlay place <node> hub`) and no seat at all.
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## Why it matters beyond this instance
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The four foundation seats all say the same thing: *there is exactly one of me in this mesh*
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([ADR 0079](../../02-DECISIONS/0079-the-foundation-seats-are-named-after-their-servers.md)). "There is
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exactly one hub" is that shape. As a placement it is refused by nothing: two nodes can be placed as
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hub, and the mesh would compute a graph with two rendezvous points and say nothing.
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It also confuses the reading. Asked "who provides the private network", the registry answers with
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a node-scoped seat held by every node, which is true and not what was asked.
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## Open questions
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- Should the hub be a mesh-scoped seat — `the-hub`, or the network's own name — claimed by the
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node that is placed there, refused elsewhere?
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- Does the per-node seat still say anything once the hub is a seat, or is it the interface's
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presence restated?
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- What else in the mesh is "exactly one" and recorded as a placement rather than a seat?
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