No, it isn't the ack — ACK is its own payload class and was never in the match.
Both symptoms come from the same place: a packet header's route type, which we
never recorded, decides what its `path` field *is*.
A FLOOD packet accumulates: every relay appends its hash, so the path is the
route it travelled to reach us. A DIRECT packet is the opposite — the path is a
routing instruction the sender wrote and the relays consume — so it says where
the packet is going, and an empty one means the route was used up, not that the
packet arrived in a single leap. Reading every path the first way is what drew a
message from five hops out as having appeared from nowhere.
The evidence is in your own log. The four-hop route on those sends is identical
across four consecutive messages, where a flood-accumulated path varies every
time; it ends on 40ef0f, which is the first hop of everything hairu sends *us*;
and a PATH frame carrying exactly those four hops crosses the log seconds before
the first message that uses it. That is a learned route to hairu being announced
and then used — not a route anything took to us.
So route_typename is stored (schema v15, a `route` column beside the crypto and
addressing ones added for the same reason), and an Arrival carries whether it
was routed. A routed frame with no path has route_known False: it is kept as a
copy that reached us — the count and the time are real — but it is drawn as
"routed · route not carried" instead of a confident zero hops, and it puts no
lane in the fan, because an empty lane there is a claim of adjacency the frame
never made. Frames from before the column read None and fall back to the old
behaviour rather than to a guess.
The round trip is a second bug and needed no new data. The path line closed on
our own ★ unconditionally, and for an outgoing message its head is our ★ too —
so every send drew ★ ▶ … ▶ ★. The graph did the same, DST_NODE having been
hardcoded to us. Both now take a destination: the far end for a message we sent,
ourselves for one we received. It is the rule the line's head already followed —
a path runs between the nodes it went between — applied at last to its tail. A
channel broadcast keeps us at both ends, because there the copies we log really
are our own message coming back.
collapse now keys on the route type as well as the hops, so a route travelled
and a route intended never fold into one row even when the hashes match.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Jean-Pierre MartineauandClaude Opus 5
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