ping: sendto: Operation not permitted

[borhene HASSINE <borhene.hassine@telnet.com.tn>]

L'ajout d'une route automatique n'est pas pris 
en consideration et provoque l'erreur suivante :
'ping: sendto: Operation not permitted'

Question : Quelle est la solution a ce probleme ? 

Voici la liste des commandes effectuees :
->ifconfig eth0:1 183.121.100.10

->route add -net 183.121.100.0 netmask 255.255.255.0 gw 120.100.100.2

->ping 183.121.100.10
ping: sendto: Operation not permitted
ping: wrote 183.121.100.10 chars, ret=-1
ping: sendto: Operation not permitted
ping: wrote 183.121.100.10 64 chars, ret=-1

--- 183.121.100.10 ping statistics ---
11 packets transmitted, 0 packets received, 100% packet loss