{"environment": "Linux-6.18.10-200.fc43.aarch64-aarch64-with-glibc2.42", "python": "3.14.3", "ip": "ip utility, iproute2-6.14.0, libbpf 1.6.1", "prefix": "net06-3dc06af9", "configuration": "static IPv4, no DHCP client/server", "router_namespace_forwarding": "net.ipv4.ip_forward = 1"}
{"neigh_before": [], "route_get": [{"dst": "10.6.2.2", "gateway": "10.6.1.1", "dev": "eth0", "prefsrc": "10.6.1.2", "flags": [], "uid": 0, "cache": []}], "neigh_after_route_get": []}
{"echo_hex": "6e657430362d6f776e65642d7564702d6563686f", "peer": ["10.6.2.2", 46006], "arp_request_targets": ["10.6.1.1"], "outbound_ip_targets": ["10.6.2.2"], "outbound_ethernet_targets": ["02:00:00:00:06:01"], "raw_frames": ["ffffffffffffa2d15e1985e808060001080006040001a2d15e1985e80a0601020000000000000a060101", "a2d15e1985e8020000000601080600010800060400020200000006010a060101a2d15e1985e80a060102", "020000000601a2d15e1985e808004500003027b240004011fbfb0a0601020a060202dfd5b3b6001c173d6e657430362d6f776e65642d7564702d6563686f", "a2d15e1985e8020000000601080045000030795840003f11ab550a0602020a060102b3b6dfd5001c173d6e657430362d6f776e65642d7564702d6563686f"]}
{"server_received_hex": "6e657430362d6f776e65642d7564702d6563686f", "peer": ["10.6.1.2", 57301]}
{"neigh_after_echo": [{"dst": "10.6.1.1", "lladdr": "02:00:00:00:06:01", "state": ["REACHABLE"]}], "result": "isolated cross-subnet UDP echo passed", "scope": "Linux veth routing and ARP only; no DHCP, physical network or public E2E"}
{"cleanup": "only namespaces created by this run deleted", "owned": ["net06-3dc06af9-a", "net06-3dc06af9-r", "net06-3dc06af9-b"]}