On Mon, Apr 07, 2014 at 12:58:00PM +0100, lejeczek wrote: > I'm hoping an expert could help me, clarify this one for me, should > be simple I guess, probably not for a newbie like me > > having on one system > > physical eth 192.168.2.33/24 > and a > bridge (only taps no phys) 192.168.2.33/29 When you're going to bridge an interface, you assign it "0.0.0.0/0" (which is to bring it up.) Then you assign an IP address to the bridge. No time to look it up for you right now, but I believe the brctl(8) manual should cover this. > I cannot get to anything behind 192.168.2.33/29 from anything > behind 192.168.2.33/24 (and vice versa) Broken bridge, I guess. > each side can get respectively tofurther-out interface of the > 192.168.2.33 routing + forwarding I have it set up all I believe > > is such a configuration even valid? should be, right? > > I'm trying to understand subnet concept of, in this case class C Do yourself a favor: totally forget about "class". > private net - is 192.168.2.33/29 still a part of 192.168.2.33/24 > or it is a whole separate network. It is indeed a part. To turn those addresses into valid CIDR expressions, change the last quads to be the network address: 1. 192.168.2.33/29 becomes 192.168.2.32/29 This includes IP addresses 192.168.2.32 through .39 2. 192.168.2.33/24 becomes 192.168.2.0/24 This includes IP addresses 192.168.2.0 through .255 -- http://rob0.nodns4.us/ Offlist GMX mail is seen only if "/dev/rob0" is in the Subject: -- To unsubscribe from this list: send the line "unsubscribe netfilter" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html