On Fri, 27 Nov 2009 10:57:25 +0000 Arnd Bergmann <arnd@xxxxxxxx> wrote: > Macvlan can now optionally support forwarding between its > ports, if they are in "bridge" mode. This adds support > for this option to "ip link add", "ip link set" and "ip > -d link show". > > The default mode in the kernel is now "vepa" mode, meaning > "virtual ethernet port aggregator". This mode is used > together with the "hairpin" mode of an ethernet bridge > that the parent of the macvlan device is connected to. > All frames still get sent out to the external interface, > but the adjacent bridge is able to send them back on > the same wire in hairpin mode, so the macvlan ports > are able to see each other, which the bridge can be > configured to monitor and control traffic between > all macvlan instances. Multicast traffic coming in > from the external interface is checked for the source > MAC address and only delivered to ports that have not > yet seen it. > > In bridge mode, macvlan will send all multicast traffic > to other interfaces that are also in bridge mode but > not to those in vepa mode, which get them on the way > back from the hairpin. > > The third supported mode is "private", which prevents > communication between macvlans even if the adjacent > bridge is in hairpin mode. This behavior is closer to > the original implementation of macvlan but stricly > maintains isolation. > > Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx> Okay, applied for next version -- _______________________________________________ Bridge mailing list Bridge@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/bridge
