Ola Sergio, how are you? Thank you very much by your reply. I got understand your explanations.
Best regards. Norberto 2015-04-06 9:47 GMT-03:00 Sergio R. Caprile <[email protected]>: > Ola Norberto, > > > - VM´s network configured as "NAT Network" > Sorry, I don't know what that is, assuming your virtual machines + > network are properly configured, it doesn't matter wether they are > virtual or real, they are machines in one or many networks and can be > pinged if routed and not firewalled. > > If I understand correctly, you are running lwIP under Ubuntu GNU/Linux. > I don't know what your particular netif does (sorry, that is your job), > the "standard" provided in the contrib tree: mintapif, uses a TUN/TAP > interface. > Bear in mind that different interfaces (except in some particular cases) > must belong to different IP networks, otherwise you must bridge them. > The TUN/TAP interface has its own IP subnet and the host machine routes > to it because it looks like a physical interface. In order for the other > machines to reach that, they have to be configured to properly route > that subnet. > > > I configure the netif with IP=10.0.2.62, MASK=255.255.255.0, GW=10.0.2.61 > > > > The eth-7 (VM#1) interface has this configuration: > > eth7 Link encap:Ethernet HWaddr 08:00:27:48:61:0c > > inet addr:10.0.2.6 Bcast:10.0.2.255 Mask:255.255.255.0 > > For what I think I understand, you have two Ethernet interfaces within > the same IP subnet in the same machine. That won't work unless you > bridge them or change one of them. > You should see an interface for lwIP in your ifconfig with the GW > address you configured for lwIP. If you expect Linux to route, then > addresses must belong to different subnets, otherwise, put the > interfaces into a bridge so Linux can bridge them. > > The ARP request is a broadcast, the Echo Request (ping) is unicast. > check for something like this in your netif.c > > netif->flags |= NETIF_FLAG_BROADCAST | NETIF_FLAG_ETHARP; > > > -- > > > _______________________________________________ > lwip-users mailing list > [email protected] > https://lists.nongnu.org/mailman/listinfo/lwip-users -- Norberto R. de Goes Jr. CPqD - DRC Tel.: +55 19 3705-4241 / Fax: +55 19 3705-6125 [email protected] <[email protected]> www.cpqd.com.br
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