Date: Tue, 15 Nov 2005 22:52:15 -0600 From: Erik Osterholm <erik@cepheid.org> To: Steve Bertrand <iaccounts@ibctech.ca> Cc: 'Ashley Moran' <work@ashleymoran.me.uk>, 'FreeBSD Questions' <questions@freebsd.org> Subject: Re: if_bridge interface confuses Windows Small Business Server 2000 Message-ID: <20051116045215.GA81394@idoru.cepheid.org> In-Reply-To: <20051115134317.90F3843D45@mx1.FreeBSD.org> References: <200511151241.55239.work@ashleymoran.me.uk> <20051115134317.90F3843D45@mx1.FreeBSD.org>
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On Tue, Nov 15, 2005 at 08:43:18AM -0500, Steve Bertrand wrote: > > > FreeBSD 6 came at the perfect time for me. I've just > > switched my primary desktop from Win2k to FreeBSD, and I put > > the Windows boot disk in an old machine that was heading for the skip. > > > > I wanted to access the W2k machine (fred) over VNC without > > flooding our switch, so I thought let's take advantage of the > > new features in REL 6... I added a second ethernet card to > > my FreeBSD box (alfie) and configured a bridge in /etc/rc.conf: > > > > ifconfig_rl0="DHCP" > > ifconfig_rl1="up" > > cloned_interfaces="bridge0" > > ifconfig_bridge0="addm rl0 addm rl1 up" > > gateway_enable="YES" > > > > SBS is configured to give a static DHCP lease of > > 192.168.0.181 to alfie; fred is dynamic and is currently 192.168.0.35. > > > > At first everything seemed fine, and fred operates as if it > > was plugged straight into the network. > > > > But... > > > > 1) SBS sees both machines as alfie, even though it correctly > > reports the MAC addresses of each machine > > > > 2) On alfie, when I want to make a VNC connection to fred I > > have to type "vnc viewer alfie"(!) > > > > 3) On fred, if I ping alfie it returns 192.168.0.35 as the IP > > number, not 181 which is the static lease. > > > > > > I assume this is a bug in if_bridge, only because I assumed > > that bridge > > interfaces should be transparent (and act like a physical switch). > > > > When we get some small switches in I'll use one to connect > > the two machines > > together, but I'd still like to work out what's going on > > here. Am I doing > > something wrong? > > I'm a wee bit confused here, but I do understand what you are trying to > do. > > First, did you compile a new kernel with the following option?: > > options BRIDGE This should not be necessary with if_bridge. A kernel module must be loaded before if_bridge will work, but seems to load automatically when creating the bridge interface. Alternatively, if_bridge can be compiled into the kernel with the following line: device if_bridge I've even read where the bridge(4) bridging mode is deprecated. Does anyone know if this is accurate? > Second, try giving both PC's a static IP address, and disconnect the > FBSD box entirely from the network (so you essentially have a 2 pc > network), then commence testing. > > HTH, > > Steve > > > > > > > Ashley Erik
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