vde_plug: 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/vde_plug - from package: vde2

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

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