Huii ... indeed, setting echo "1" > arp_ignore really helps. But really. Can't somebody not tell redhat, suse, debian and so To active this ? Thx. For the moment Franz -----Ursprüngliche Nachricht----- Von: Jeff Haran [mailto:jharan@xxxxxxxxxxx] Gesendet: Mittwoch, 25. Oktober 2006 03:53 An: Lehner Franz; linux-net@xxxxxxxxxxxxxxx Betreff: RE: Network: Duplicate MAC adress response in multihomed system : All Kernels > -----Original Message----- > From: linux-net-owner@xxxxxxxxxxxxxxx > [mailto:linux-net-owner@xxxxxxxxxxxxxxx]On Behalf Of Lehner Franz > Sent: Tuesday, October 24, 2006 6:36 PM > To: linux-net@xxxxxxxxxxxxxxx > Subject: BUG: Network: Duplicate MAC adress response in multihomed > system : All Kernels > ... > take a linux, configure this kind > > eth0: 192.168.10.200 / 255.255.255.0 > eth1: 192.168.10.201 / 255.255.255.0 > > Both Interfaces are "real ethernet cards" and are connected to same > switch > > if you take now a 3'rd machine, and do a > > arping -c 1 192.168.10.200 > >60 bytes from 00:0c:29:bc:96:fe ( 192.168.10.200): index=0 > time=645.876 > usec > >60 bytes from 00:0c:29:bc:96:f4 ( 192.168.10.200): index=1 time=1.472 > msec > ... > > regards > Lehner Franz > > - > To unsubscribe from this list: send the line "unsubscribe > linux-net" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html > > I ran into the same thing myself and since linux is infinitely configurable, I figured I'd go poking around in /proc/sys/net/ipv4/conf/all. Perhaps application of the following would get you what you want, though I haven't tested it myself (though I would be interested in reading what you find out about it since I am too lazy and currently lack the equipment to try it myself). See: http://kb.linuxvirtualserver.org/wiki/Using_arp_announce/arp_ignore_to_d isable_ARP ===QUOTE=== arp_ignore - INTEGER Define different modes for sending replies in response to received ARP requests that resolve local target IP addresses: 0 - (default): reply for any local target IP address, configured on any interface 1 - reply only if the target IP address is local address configured on the incoming interface 2 - reply only if the target IP address is local address configured on the incoming interface and both with the sender's IP address are part from same subnet on this interface 3 - do not reply for local addresses configured with scope host, only resolutions for global and link addresses are replied 4-7 - reserved 8 - do not reply for all local addresses The max value from conf/{all,interface}/arp_ignore is used when ARP request is received on the {interface} ===END QUOTE=== Another interesting one is arp_announce described on the same page. Jeff Haran Brocade Communications Systems - To unsubscribe from this list: send the line "unsubscribe linux-net" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
