RE: [uml-user] UML Bridging and subnets

[Brock, A. - N. <Ant...@or...>]

Sorry, I sent the wrong bridging interface. Here is the output from my
"public" bridge:

~# brctl show
bridge name     bridge id               STP enabled     interfaces
br2             8000.00e0815a0ebc       no              apache-prod
                                                        eth0
                                                        mail-prod
~#=20

Tony


> -----Original Message-----
> From: use...@li...=20
> [mailto:use...@li...] On=20
> Behalf Of Brock, Anthony - NET
> Sent: Monday, December 12, 2005 2:13 PM
> To: use...@li...
> Subject: RE: [uml-user] UML Bridging and subnets
>=20
> Are you setup to forward IP packets on the host? Something like:
>=20
> ~$ cat /proc/sys/net/ipv4/conf/all/forwarding
> 1
> ~$=20
>=20
> This assumes that you're using your host as a gateway.=20
> Alternatively, is
> br0 connected to a physical device? For example:
>=20
> ~# brctl show
> bridge name     bridge id               STP enabled     interfaces
> br0             8000.00e0815a0eba       no              apache-test
>                                                         mail
> ~#=20
>=20
> In this case, I don't need (or want) the 'forwarding' flag.=20
> The bridging
> interface will automatically forward packets out eth0.
>=20
> Tony
>=20
>=20
> > -----Original Message-----
> > From: use...@li...=20
> > [mailto:use...@li...] On=20
> > Behalf Of dfl...@sw...
> > Sent: Monday, December 12, 2005 1:25 PM
> > To: use...@li...
> > Subject: [uml-user] UML Bridging and subnets
> >=20
> > Hello,
> >=20
> > I'm usually pretty good at finding answers on my own, but=20
> > I've only been
> > able to find information in regard to private UML networks=20
> > and NAT etc.
> >=20
> > I have some UMLs that are unable to access the network beyond=20
> > the host.
> > Here is the scenario:
> >=20
> > (Sorry about the "999", I'm using routable IPs)
> >=20
> > Host IP (br0): 999.999.165.229
> > UML IP (tap1): 999.999.165.231
> > UML IP (tap2): 999.999.160.52
> >=20
> > Now the first UML instance, tap1 165.231, can get to the=20
> > network beyond
> > the host, but the second cannot.
> >=20
> > While searching the net for my answer, I did find some info=20
> > that seemed
> > to imply I must alias a similar IP to the bridge so I did,=20
> Host br0:1
> > 999.999.160.49.  Now the host and the second UML can reach=20
> each other,
> > but it still can't get beyond the host.
> >=20
> > Must the host be setup as a gateway?  Do I need to use iptables etc?
> >=20
> > Thank-you,
> >=20
> > ---Dan=20
> >=20
> >=20
> >=20
> >=20
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>=20