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Old 2nd December 2014
J65nko J65nko is offline
Join Date: May 2008
Location: Budel - the Netherlands
Posts: 3,597

I printed the virt-install(1) and virsh(1) man pages so I could study them conveniently.
The virt-install(1) man page explains the types of networking:
Networking Configuration
    -w NETWORK, --network=NETWORK,opt1=val1,opt2=val2
      Connect the guest to the host network. The value for "NETWORK" can take one of 3 formats:

          Connect to a bridge device in the host called "BRIDGE". Use this option if the host has static
          networking config & the guest requires full outbound and inbound connectivity  to/from the LAN.
          Also use this if live migration will be used with this guest.

          Connect to a virtual network in the host called "NAME". Virtual networks can be listed,
          created, deleted using the "virsh" command line tool. In an unmodified install of "libvirt"
          there is usually a virtual network with a name of "default". Use a virtual network if the host
          has dynamic networking (eg NetworkManager), or using wireless. The guest will be NATed to the
          LAN by whichever connection is active.
So the following option for # virt-install will configure the networking for the guest system:
--network bridge=br0,model=virtio
You don't need to be a genius to debug a pf.conf firewall ruleset, you just need the guts to run tcpdump
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