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Johnathan Corgan
2ef36c0071
Ethernet edges get a veth pair created in the host namespace and then moved into the containers, named from the node ids alone. ethernet-mesh and ethernet-only both connect n01 to n04 and always run together, so one tore down the other's live link. Hash the scenario suffix to four hex characters and insert those after the vh prefix; 15 characters is far too few to carry the suffix itself. The names are now run-specific and never regenerated, so the delete-before-create no longer reclaims an interface an earlier run abandoned. ci-cleanup.sh takes over, deriving the names from the suffixes a run's teardown hands it. It is the first thing that script removes that is neither a docker object nor labelled, so an unscoped reap can sever a running bare simulation's links; testing/README.md and the --reap help say so.