test Test:
    subnet s1
    node n1_1 on s1
    node n1_2 on s1

    subnet s2
    node n2_1 on s2
    node n2_2 on s2

    subnet s3
    node n3 on s3

    local:
        shell on n1_1:
            ping ${n1_2.ip} -c 1 -W 0.001
            ping ${n2_2.ip} -c 1 -W 0.001
            ping ${n3.ip} -c 1 -W 0.001

        shell on n2_1:
            ping ${n1_2.ip} -c 1 -W 0.001
            ping ${n2_2.ip} -c 1 -W 0.001
            ping ${n3.ip} -c 1 -W 0.001

    local:
        disconnect_nodes s1

        shell on n1_1:
            ! ping ${n1_2.ip} -c 1 -W 0.001
            ! ping ${n2_2.ip} -c 1 -W 0.001
            ! ping ${n3.ip} -c 1 -W 0.001

        shell on n2_1:
            ! ping ${n1_2.ip} -c 1 -W 0.001
            ping ${n2_2.ip} -c 1 -W 0.001
            ping ${n3.ip} -c 1 -W 0.001

    local:
        shell on n1_1:
            ping ${n1_2.ip} -c 1 -W 0.001
            ping ${n2_2.ip} -c 1 -W 0.001
            ping ${n3.ip} -c 1 -W 0.001

        shell on n2_1:
            ping ${n1_2.ip} -c 1 -W 0.001
            ping ${n2_2.ip} -c 1 -W 0.001
            ping ${n3.ip} -c 1 -W 0.001