#!/bin/sh
KERNEL_NTP="${1:-/proc/net/ipconfig/ntp_servers}"
NTP_SERVERS=""
if [ -f /proc/net/ipconfig/ntp_servers ]; then
  for srv in $(cat /proc/net/ipconfig/ntp_servers); do
    if [ -n "$srv" -a "$srv" != "0.0.0.0" ]; then
      if [ -z "$NTP_SERVERS" ]; then
        NTP_SERVERS="$srv"
      else
        NTP_SERVERS="${NTP_SERVERS} $srv"
      fi
    fi
  done
  if [ -n "$NTP_SERVERS" ]; then
    mkdir -p /run/systemd/timesyncd.conf.d/
    cat << EOF > /run/systemd/timesyncd.conf.d/kernel-ntp-servers.conf
[Time]
NTP=$NTP_SERVERS
EOF
  fi
fi