fix: DNS resolution

: ${VM_NET_MAC:="$MAC"}

: ${VM_NET_HOST:='VirtualDSM'}

: ${DNS_SERVERS:=''}

: ${DNSMASQ_OPTS:=''}

: ${DNSMASQ:='/usr/sbin/dnsmasq'}

: ${DNSMASQ_CONF_DIR:='/etc/dnsmasq.d'}

  echo "0 $VM_NET_MAC $VM_NET_IP $VM_NET_HOST 01:${VM_NET_MAC}" > /var/lib/misc/dnsmasq.leases

  chmod 644 /var/lib/misc/dnsmasq.leases

  # Build DNS options from container /etc/resolv.conf

  if [[ "${DEBUG}" == [Yy1]* ]]; then

    echo "/etc/resolv.conf:" && echo && cat /etc/resolv.conf && echo

  fi

  mapfile -t nameservers < <( { grep '^nameserver' /etc/resolv.conf || true; } | sed 's/\t/ /g' | sed 's/nameserver //' | sed 's/ //g')

  searchdomains=$( { grep '^search' /etc/resolv.conf || true; } | sed 's/\t/ /g' | sed 's/search //' | sed 's/#.*//' | sed 's/\s*$//g' | sed 's/ /,/g')

  domainname=$(echo "$searchdomains" | awk -F"," '{print $1}')

  for nameserver in "${nameservers[@]}"; do

    nameserver=$(echo "$nameserver" | sed 's/#.*//' )

    [[ "$nameserver" =~ .*:.* ]] && continue

    [[ "$nameserver" == "127.0"* ]] && nameserver=$GATEWAY

    [[ -z "$DNS_SERVERS" ]] && DNS_SERVERS="$nameserver" || DNS_SERVERS="$DNS_SERVERS,$nameserver"

  done

  [[ -z "$DNS_SERVERS" ]] && DNS_SERVERS=$GATEWAY

  DNSMASQ_OPTS="$DNSMASQ_OPTS --dhcp-option=option:dns-server,$DNS_SERVERS --dhcp-option=option:router,${VM_NET_IP%.*}.1"

  if [ -n "$searchdomains" ] && [ "$searchdomains" != "." ]; then

    DNSMASQ_OPTS="$DNSMASQ_OPTS --dhcp-option=option:domain-search,$searchdomains --dhcp-option=option:domain-name,$domainname"

  else

    [[ -z $(hostname -d) ]] || DNSMASQ_OPTS="$DNSMASQ_OPTS --dhcp-option=option:domain-name,$(hostname -d)"

  fi

  # Set DNS server and gateway

  DNSMASQ_OPTS="$DNSMASQ_OPTS --dhcp-option=option:dns-server,${VM_NET_IP%.*}.1 --dhcp-option=option:router,${VM_NET_IP%.*}.1"

  DNSMASQ_OPTS=$(echo "$DNSMASQ_OPTS" | sed 's/\t/ /g' | tr -s ' ' | sed 's/^ *//')

  [[ "${DEBUG}" == [Yy1]* ]] && set -x