naddress: command not found

Maybe Your $PATH variable doesn't contain the default paths? echo $PATH should give something like:

[root@server ~]# echo $PATH
/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin

If it's empty, You may set the PATH variable with this command

export PATH="/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin"

On Debian possible default full paths are:

/usr/sbin/naddress - from package: util-vserver

You may install the required package with command apt-get install {package}

Error in other languages:
naddress: bevel nie gevind nie
naddress: comandă negăsită
naddress: comando não encontrado
naddress: commande introuvable
naddress: command not found
naddress: käsku ei ole
naddress: không tìm thấy lệnh
naddress: komanda nerasta
naddress: Kommando nicht gefunden.
naddress: kommandot finns inte
naddress: komut yok
naddress: nie znaleziono polecenia
naddress: níor aimsíodh an t-ordú
naddress: no se encontró la orden
naddress: no s'ha trobat l'ordre
naddress: opdracht niet gevonden
naddress: parancs nem található
naddress: perintah tidak ditemukan
naddress: príkaz nenájdený
naddress: příkaz nenalezen
naddress: команда не найдена
naddress: командата не е открита
naddress: 命令找不到
naddress: コマンドが見つかりません