add links relay test

1 files changed, 5 insertions, 0 deletions

diff --git a/docs/development.md b/docs/development.md
index 93726b1..d7f6068 100644
--- a/docs/development.md
+++ b/docs/development.md
@@ -50,3 +50,8 @@ take as long as the protocol's timeouts make them, however fast the machine, and
 busy machine some fail now and then (a node's timer fires before the work it waits for
 is done). One failing alone (`cargo sim <name>`) and passing then is that, not a
 regression; one failing again and again is a regression.
+
+A node on several transports is a node on several simulated nets, one per scheme
+(`Sim::start_on`, under the identity layer): nodes on different nets can't reach each
+other, as one on Tor alone and one on libp2p alone can't, so a swarm whose transports
+don't all meet is simulated with the simulated transport alone.