Hi, I have an issue with a bridged interface... I use xenserver 5.5 on 2 serveur, both of this serveur are connected on 2 different switch both have the same configuration, this server are hosted and both have 4 ip assigned.. the server a ideticaly for the network card (r8169) , on one of this server , when i ping the main ip of the xenserver ( let say 10.0.0.1 ) no issue, if i ping an assigned ip (let say 10.0.0.2) to this server wich is not present on the server, the main ip loose a packet for each packet sent on 10.0.0.2 , when i stop the ping of 10.0.0.2 , the ip 10.0.0.1 answer correctly.. no kernel message error, no error no where in the log... if i manually enter a fake mac adress for the ip 10.0.0.2 on the server or if i enter the ip 10.0.0.2, no problem.. I have make a tcpdump, each icmp packet is replyed... On the other server, which is connected to an another switch, but the same card, no pb at all... If i remove the bridge , and let the ip on the eth0 no pb..( that whyi wrote here), as it's linked to the bridge. I try with a debian in rescue mode( different kernel), same issue... I'm almost sure that it becomeing from the swith or the router, before, but my hoster still think that it becomeing from a misconfiguration of the server.. how can i debug the bridge ? to see waht happen when it bridged.. I'm a bit lost , i try to find on google ( google is my friend ;-) ), but i saw about ebtable, to log in the kernel, but i didnt find any error with this way.. If someone can help me.. Thank you Fabrice