petite precision j ai virer shorewall
j ai mis les regles iptables suivantes :
# Traitement diffusions requetes DHCP (DhcpRelay)
#
iptables -A INPUT -i eth0 -p udp -m multiport --destination-ports 68,67 -m state --state NEW -j ACCEPT
#
# Rule 1(eth0)
#
# Traitement des requetes retour DHCP (DHCP Relay)
#
iptables -A OUTPUT -o eth0 -p udp -m multiport --destination-ports 68,67 -m state --state NEW -j ACCEPT
#
# Rule 0(eth1)
#
# Traitement diffusions requetes DHCP (DhcpRelay)
#
iptables -A INPUT -i eth1 -p udp -m multiport --destination-ports 68,67 -m state --state NEW -j ACCEPT
#
# Rule 1(eth1)
#
# Traitement retour requetes DHCP (DHCP Relay)
#
iptables -A OUTPUT -o eth1 -p udp -m multiport --destination-ports 68,67 -m state --state NEW -j ACCEPT
merci