docs/colo-proxy.txt: Update colo-proxy usage of net driver with vnet_header

-chardev socket,id=red1,host=3.3.3.3,port=9004

-object filter-redirector,id=f1,netdev=hn0,queue=tx,indev=red0

-object filter-redirector,id=f2,netdev=hn0,queue=rx,outdev=red1

-object filter-rewriter,id=f3,netdev=hn0,queue=all

If you want to use virtio-net-pci or other driver with vnet_header:

Primary(ip:3.3.3.3):

-netdev tap,id=hn0,vhost=off,script=/etc/qemu-ifup,downscript=/etc/qemu-ifdown

-device e1000,id=e0,netdev=hn0,mac=52:a4:00:12:78:66

-chardev socket,id=mirror0,host=3.3.3.3,port=9003,server,nowait

-chardev socket,id=compare1,host=3.3.3.3,port=9004,server,nowait

-chardev socket,id=compare0,host=3.3.3.3,port=9001,server,nowait

-chardev socket,id=compare0-0,host=3.3.3.3,port=9001

-chardev socket,id=compare_out,host=3.3.3.3,port=9005,server,nowait

-chardev socket,id=compare_out0,host=3.3.3.3,port=9005

-object filter-mirror,id=m0,netdev=hn0,queue=tx,outdev=mirror0,vnet_hdr_support

-object filter-redirector,netdev=hn0,id=redire0,queue=rx,indev=compare_out,vnet_hdr_support

-object filter-redirector,netdev=hn0,id=redire1,queue=rx,outdev=compare0,vnet_hdr_support

-object colo-compare,id=comp0,primary_in=compare0-0,secondary_in=compare1,outdev=compare_out0,vnet_hdr_support

Secondary(ip:3.3.3.8):

-netdev tap,id=hn0,vhost=off,script=/etc/qemu-ifup,down script=/etc/qemu-ifdown

-device e1000,netdev=hn0,mac=52:a4:00:12:78:66

-chardev socket,id=red0,host=3.3.3.3,port=9003

-chardev socket,id=red1,host=3.3.3.3,port=9004

-object filter-redirector,id=f1,netdev=hn0,queue=tx,indev=red0,vnet_hdr_support

-object filter-redirector,id=f2,netdev=hn0,queue=rx,outdev=red1,vnet_hdr_support

-object filter-rewriter,id=f3,netdev=hn0,queue=all,vnet_hdr_support

Note:

  a.COLO-proxy must work with COLO-frame and Block-replication.