tools/hook-network-manager


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#!/bin/sh
# This script hooks into NetworkManager(8) via its scripts
# arguments are 'interface-name' and 'action'
#
is_azure() {
    local dmi_path="/sys/class/dmi/id/board_vendor" vendor=""
    if [ -e "$dmi_path" ] && read vendor < "$dmi_path"; then
        [ "$vendor" = "Microsoft Corporation" ] && return 0
    fi
    return 1
}

is_enabled() {
    # only execute hooks if cloud-init is enabled and on azure
    [ -e /run/cloud-init/enabled ] || return 1
    is_azure
}

if is_enabled; then
    case "$1:$2" in
        *:up) exec cloud-init dhclient-hook up "$1";;
        *:down) exec cloud-init dhclient-hook down "$1";;
    esac
fi