4 files changed, 111 insertions, 0 deletions
diff --git a/src/etc/netplug/linkup.d/vyos-python-helper b/src/etc/netplug/linkup.d/vyos-python-helper
new file mode 100644
index 0000000..9c59c58
--- /dev/null
+++ b/src/etc/netplug/linkup.d/vyos-python-helper
@@ -0,0 +1,4 @@
+#!/bin/sh
+PYTHON3=$(which python3)
+# Call the real python script and forward commandline arguments
+$PYTHON3 /etc/netplug/vyos-netplug-dhcp-client "${@:1}"
diff --git a/src/etc/netplug/netplug b/src/etc/netplug/netplug
new file mode 100644
index 0000000..60b65e8
--- /dev/null
+++ b/src/etc/netplug/netplug
@@ -0,0 +1,41 @@
+#!/bin/sh
+#
+# Copyright 2023 VyOS maintainers and contributors <maintainers@vyos.io>
+#
+# This library is free software; you can redistribute it and/or
+# modify it under the terms of the GNU Lesser General Public
+# License as published by the Free Software Foundation; either
+# version 2.1 of the License, or (at your option) any later version.
+#
+# This library is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public
+# License along with this library.  If not, see <http://www.gnu.org/licenses/>.
+
+dev="$1"
+action="$2"
+
+case "$action" in
+in)
+   run-parts --arg $dev --arg in /etc/netplug/linkup.d
+    ;;
+out)
+   run-parts --arg $dev --arg out /etc/netplug/linkdown.d
+    ;;
+
+# probe loads and initialises the driver for the interface and brings the
+# interface into the "up" state, so that it can generate netlink(7) events.
+# This interferes with "admin down" for an interface. Thus, commented out. An
+# "admin up" is treated as a "link up" and thus, "link up" action is executed.
+# To execute "link down" action on "admin down", run appropriate script in
+# /etc/netplug/linkdown.d
+#probe)
+#    ;;
+
+*)
+    exit 1
+    ;;
+esac
diff --git a/src/etc/netplug/netplugd.conf b/src/etc/netplug/netplugd.conf
new file mode 100644
index 0000000..7da3c67
--- /dev/null
+++ b/src/etc/netplug/netplugd.conf
@@ -0,0 +1,4 @@
+eth*
+br*
+bond*
+wlan*
diff --git a/src/etc/netplug/vyos-netplug-dhcp-client b/src/etc/netplug/vyos-netplug-dhcp-client
new file mode 100644
index 0000000..55d15a1
--- /dev/null
+++ b/src/etc/netplug/vyos-netplug-dhcp-client
@@ -0,0 +1,62 @@
+#!/usr/bin/env python3
+#
+# Copyright 2023 VyOS maintainers and contributors <maintainers@vyos.io>
+#
+# This library is free software; you can redistribute it and/or
+# modify it under the terms of the GNU Lesser General Public
+# License as published by the Free Software Foundation; either
+# version 2.1 of the License, or (at your option) any later version.
+#
+# This library is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public
+# License along with this library.  If not, see <http://www.gnu.org/licenses/>.
+
+import sys
+
+from time import sleep
+
+from vyos.configquery import ConfigTreeQuery
+from vyos.ifconfig import Section
+from vyos.utils.boot import boot_configuration_complete
+from vyos.utils.commit import commit_in_progress
+from vyos.utils.process import call
+from vyos import airbag
+airbag.enable()
+
+if len(sys.argv) < 3:
+    airbag.noteworthy("Must specify both interface and link status!")
+    sys.exit(1)
+
+if not boot_configuration_complete():
+    airbag.noteworthy("System bootup not yet finished...")
+    sys.exit(1)
+
+while commit_in_progress():
+    sleep(1)
+
+interface = sys.argv[1]
+in_out = sys.argv[2]
+config = ConfigTreeQuery()
+
+interface_path = ['interfaces'] + Section.get_config_path(interface).split()
+
+for _, interface_config in config.get_config_dict(interface_path).items():
+    # Bail out early if we do not have an IP address configured
+    if 'address' not in interface_config:
+        continue
+    # Bail out early if interface ist administrative down
+    if 'disable' in interface_config:
+        continue
+    systemd_action = 'start'
+    if in_out == 'out':
+        systemd_action = 'stop'
+    # Start/Stop DHCP service
+    if 'dhcp' in interface_config['address']:
+        call(f'systemctl {systemd_action} dhclient@{interface}.service')
+    # Start/Stop DHCPv6 service
+    if 'dhcpv6' in interface_config['address']:
+        call(f'systemctl {systemd_action} dhcp6c@{interface}.service')