Reseau creé probleme ping

Bonjour,

encore moi j'ai enfin reussi a avoir toutes mes cartes connecté ,mais toujours pas de connection partagé

lorsque je ping d un pc a l autre ca ne marche que dans un sens

donc voici ma config sur pc1 avec internet en direct

eth0 Link encap:Ethernet HWaddr 00:16:17:47:C5:B8
inet adr:192.168.1.21 Bcast:192.168.1.255 Masque:255.255.255.0
adr inet6: fe80::216:17ff:fe47:c5b8/64 Scope:Lien
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:11885 errors:0 dropped:0 overruns:0 frame:0
TX packets:11900 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 lg file transmission:1000
RX bytes:6268403 (5.9 MiB) TX bytes:2099662 (2.0 MiB)
Interruption:23

eth1 Link encap:Ethernet HWaddr 00:08:54:16:D3:44
inet adr:192.168.1.25 Bcast:192.168.1.255 Masque:255.255.255.0
UP BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 lg file transmission:1000
RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)
Interruption:17 Adresse de base:0x4000

lo Link encap:Boucle locale
inet adr:127.0.0.1 Masque:255.0.0.0
adr inet6: ::1/128 Scope:Hôte
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:514 errors:0 dropped:0 overruns:0 frame:0
TX packets:514 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 lg file transmission:0
RX bytes:48479 (47.3 KiB) TX bytes:48479 (47.3 KiB)

et sur pc2

eth1 link encap:ethernet hwaddr00:09:5b:69:81:c1
inet adr:192.168.1.30 Bcast:192.168.1.255 Masque:255.255.255.0
UP BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:3221224944 overruns:0 frame:3221224941
TX packets:0 errors:10 dropped:481 overruns:0 carrier:0
collisions:0 lg file transmission:1000
RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)
Interruption:18 Adresse de base:0x2000

lo Link encap:Boucle locale
inet adr:127.0.0.1 Masque:255.0.0.0
adr inet6: ::1/128 Scope:Hôte
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:190 errors:0 dropped:0 overruns:0 frame:0
TX packets:190 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 lg file transmission:0
RX bytes:18160 (17.7 KiB) TX bytes:18160(17.7 KiB)

reponse du ping

ping 192.168.1.30
PING 192.168.1.30 (192.168.1.30) 56(84) bytes of data.
From 192.168.1.21 icmp_seq=2 Destination Host Unreachable
From 192.168.1.21 icmp_seq=3 Destination Host Unreachable
From 192.168.1.21 icmp_seq=4 Destination Host Unreachable
From 192.168.1.21 icmp_seq=5 Destination Host Unreachable
From 192.168.1.21 icmp_seq=6 Destination Host Unreachable
From 192.168.1.21 icmp_seq=7 Destination Host Unreachable
From 192.168.1.21 icmp_seq=9 Destination Host Unreachable
From 192.168.1.21 icmp_seq=10 Destination Host Unreachable
From 192.168.1.21 icmp_seq=11 Destination Host Unreachable
From 192.168.1.21 icmp_seq=12 Destination Host Unreachable
From 192.168.1.21 icmp_seq=13 Destination Host Unreachable
From 192.168.1.21 icmp_seq=14 Destination Host Unreachable
From 192.168.1.21 icmp_seq=16 Destination Host Unreachable
From 192.168.1.21 icmp_seq=17 Destination Host Unreachable
From 192.168.1.21 icmp_seq=18 Destination Host Unreachable