[ping_red]   Ping-based reachability test in VLAN red [ node(s): h1 ]
[PASS]       h1: Ping to h2 (172.31.1.2) succeeded
[PASS]       Test succeeded in 4.1 seconds

[ping_blue]  Ping-based reachability test in VLAN blue [ node(s): h3 ]
[PASS]       h3: Ping to h4 (172.31.1.4) succeeded
[PASS]       Test succeeded in 0.1 seconds

[inter_vlan] Ping-based reachability test between blue and red VLANs [ node(s): h1 ]
[PASS]       h1: Ping to h3 (172.31.1.3) failed as expected
[PASS]       Test succeeded in 5.1 seconds

[SUCCESS]    Tests passed: 3