Il 30/11/2012 11:02, Michael Tokarev ha scritto: >> I do like the idea of using a common prefix for the default name >> of tap devices. Something like "qvif%d" instead of "tap%d" in tap >> initialization code. But something tells me this could break >> compatibility with external management software where something >> might be expecting the interface name to start with tap. > > Does any management interface use this bridge-helper functionality?
Libvirt uses it if you're running libvirtd without privileges. GNOME Boxes is a 1-line patch away from using it, but it's Fedora-specific and not included in any distro. Paolo > If it were me, I'd always created the tap fd in the management layer > and passed the tap fd# (or at least ifname= of an existing iface) to > qemu. Bridge helper is useful for users calling qemu directly, not > for management software. Sure, such users are also important - > including compatibility. But I don't think current unpredictable > tapNN names was a good idea to start with, and that it's good idea to > rely on this prefix in firewall rules or whatnot.
