On Mon, Nov 8, 2010 at 3:44 AM, Claudio Jeker <cje...@diehard.n-r-g.com> wrote: > In short, gif(4) will fragment packets just fine (actually it is the > normal IP fragmenting in ip_output()). So in theory you could forward > jumbo frames over a link with less then 1500 bytes by using a big MTU > gif(4) on a bridge. This works just fine as long as there is only very > little packet loss. There are a few people that use vether(4) + bridge(4) > + gif/ipsec to build L2 tunnels with full MTU, it works astoundingly well. > > The bridge(4) IP fragmenting is mostly untested and only works for IPv4. I > would not build anything on top of that feature.
I don't understand the utility of vether(4). Would that be used to bridge a non-ethernet layer2 like ATM or PPP? I would expect not to have to use vether for a regular old ethernet network, and use just bridge+gif/ipsec. --Doug
