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-rw-r--r--roles/linux_ns/files/systemd/my-netns@.service30
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diff --git a/roles/linux_ns/files/systemd/my-netns@.service b/roles/linux_ns/files/systemd/my-netns@.service
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+++ b/roles/linux_ns/files/systemd/my-netns@.service
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+[Unit]
+Description=Named network namespace %I
+Documentation=https://github.com/Jamesits/systemd-named-netns
+
+After=network-pre.target
+Before=network.target network-online.target
+
+[Install]
+WantedBy=network-online.target
+WantedBy=multi-user.target
+
+[Service]
+Type=oneshot
+RemainAfterExit=yes
+
+# precaution
+ExecStartPre=-/usr/bin/env ip netns delete %I
+
+# set up netns and bind it to this service
+ExecStart=/usr/bin/flock --no-fork -- /var/run/netns.lock /usr/bin/env ip netns add %I
+ExecStart=/usr/bin/env ip link add veth%I type veth peer vethpeer%I netns %I
+ExecStart=/usr/bin/env ip link set veth%I up
+ExecStart=/usr/bin/env ip netns exec %I ip link set vethpeer%I name eth0
+ExecStart=/usr/bin/env ip netns exec %I ip link set lo up
+ExecStart=/usr/bin/env ip netns exec %I ip link set eth0 up
+
+# remove the netns
+ExecStop=/usr/bin/env ip link del veth%I
+# type veth peer vethpeer%I netns %I
+ExecStop=/usr/bin/env ip netns delete %I