[Unit]
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Description=Network Connectivity
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Wants=network.target
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Before=network.target
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[Service]
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Type=oneshot
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RemainAfterExit=yes
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# lo is brought up earlier, which will cause the upcoming "ifup -a" to fail
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# with exit code 1, due to an "ip: RTNETLINK answers: File exists" error during
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# its "ip addr add ..." command, subsequently causing this unit to fail even
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# though it is a benign error. Flushing the lo address with the command below
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# before ifup prevents this failure.
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ExecStart=/sbin/ip addr flush dev lo
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ExecStart=/sbin/ifup -a
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ExecStop=/sbin/ifdown -a
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[Install]
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WantedBy=multi-user.target
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