On Fri, 01 Jul 2005 11:59:08 +0200 Antonio Pinizzotto <antonio.pinizzotto@xxxxxxxxxx> wrote: > > Hi all. > > I would need to use a single physical interface on a Linux box to manage > two different IP addresses (belonging to two separate logical subnets) > with two different MAC address. (I need to emulate te presence of two > separate physical interfaceses for a PC on the same LAN, at layer 2 and > layer 3). > > Is it possible to use the linux ethernet bridging code and two tap > interfaces for this purpose? > > > Here is a picture of what I need to do. > > > LAN__________________________________ > | > | eth0 (no IP) > ________|________ > | | > | br0 | > | (no IP) | > |_________________| > tap0 | | tap1 > 192.168.40.1/24 | | 192.168.30.1/24 > MAC_0 | | MAC_1 > __|________|__ > | | > | PC | > | | > |______________| > > > I would need this picture to be equivalent to this one: > > > LAN__________________________________ > eth0 | | eth1 > 192.168.40.1/24 | | 192.168.30.1/24 > MAC_0 | | MAC_1 > __|________|__ > | | > | PC | > | | > |______________| > > > I tried but it doens't work. I don't know if it's not contemplate or if > I did a wrong configuration. > For example, on tap0, using tcpdump, I see all the L2 broadcast frames > going on the LAN; but on the counters of "ifconfig tap0" all of them are > considered dropped. No packet is counted as transmitted or received, > also if I try to ping from or to tap0. > The tap interface starts to transmit/receive pachets only if it is > connected to some process like qemu or openvpn. > Maybe, it is not possibile for tap interface to be used directly by the > linux os? > Stop abusing bridging. People keep trying these wacky multiple network things and they won't work. Bridging really can't handle anything with multiple interfaces that could possibly create a forwarding loop. _______________________________________________ LARTC mailing list LARTC@xxxxxxxxxxxxxxx http://mailman.ds9a.nl/cgi-bin/mailman/listinfo/lartc
