neutron-rootwrap-xen-dom0: 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/bin/neutron-rootwrap-xen-dom0 - from package: neutron-common

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

Error in other languages:
neutron-rootwrap-xen-dom0: bevel nie gevind nie
neutron-rootwrap-xen-dom0: comandă negăsită
neutron-rootwrap-xen-dom0: comando não encontrado
neutron-rootwrap-xen-dom0: commande introuvable
neutron-rootwrap-xen-dom0: command not found
neutron-rootwrap-xen-dom0: käsku ei ole
neutron-rootwrap-xen-dom0: không tìm thấy lệnh
neutron-rootwrap-xen-dom0: komanda nerasta
neutron-rootwrap-xen-dom0: Kommando nicht gefunden.
neutron-rootwrap-xen-dom0: kommandot finns inte
neutron-rootwrap-xen-dom0: komut yok
neutron-rootwrap-xen-dom0: nie znaleziono polecenia
neutron-rootwrap-xen-dom0: níor aimsíodh an t-ordú
neutron-rootwrap-xen-dom0: no se encontró la orden
neutron-rootwrap-xen-dom0: no s'ha trobat l'ordre
neutron-rootwrap-xen-dom0: opdracht niet gevonden
neutron-rootwrap-xen-dom0: parancs nem található
neutron-rootwrap-xen-dom0: perintah tidak ditemukan
neutron-rootwrap-xen-dom0: príkaz nenájdený
neutron-rootwrap-xen-dom0: příkaz nenalezen
neutron-rootwrap-xen-dom0: команда не найдена
neutron-rootwrap-xen-dom0: командата не е открита
neutron-rootwrap-xen-dom0: 命令找不到
neutron-rootwrap-xen-dom0: コマンドが見つかりません