libvirt guest bridge configuration

From	Lucio Crusca <lucio@sulweb.org>
Newsgroups	linux.debian.user
Subject	libvirt guest bridge configuration
Date	2020-09-19 00:20 +0200
Message-ID	<AQwTv-36T-1@gated-at.bofh.it> (permalink)
Organization	linux.* mail to news gateway

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I'm trying to bridge a network interface between host and guest (both 
Debian Buster+Bullseye+Sid) so that NAT is not needed.

In the host /etc/network/interfaces I've declared a bridge like this:

auto eno1
iface eno1 inet static
   address 2.4.6.8
   netmask 255.255.255.224
   gateway 2.4.6.1
   up route add -net 2.4.6.0 netmask 255.255.255.224 gw 2.4.6.1 dev eno1


auto virbr-dummy
iface virbr-dummy inet manual
     pre-up /sbin/ip link add virbr-dummy type dummy
     up /sbin/ip link set virbr-dummy address 52:54:00:f0:37:ba


auto virbr10
iface virbr10 inet static
     bridge_ports virbr-dummy
     bridge_stp on
     bridge_fd 2
     address 2.4.6.73
     netmask 255.255.255.224
     gateway 2.4.6.65
     broadcast 2.4.6.95
     up route add -net 2.4.6.64 netmask 255.255.255.224 gw 2.4.6.65 dev eno1

Please note that 2.4.6.x are not my real IP addresses, but I've been 
really assigned 2 IP addresses and I want to use one for the host and 
the other for the guest.

Until here it seems to work in that I can ping both addresses. However I 
don't know how I should configure my guest VM interface. There is no 
nat, no DHCP and if I specify the same IP address for the virtualized 
interface as the host bridge it's connecting to, it doesn't even detect 
any link.

The guest was created with:

# virt-install --network bridge=virbr10,model=virtio ...

Please help.

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Thread

libvirt guest bridge configuration Lucio Crusca <lucio@sulweb.org> - 2020-09-19 00:20 +0200
  Re: libvirt guest bridge configuration Dan Ritter <dsr@randomstring.org> - 2020-09-19 01:00 +0200
    Re: libvirt guest bridge configuration Lucio Crusca <lucio@sulweb.org> - 2020-09-19 08:30 +0200
      Re: libvirt guest bridge configuration Fabien Roucaute <fabien.roucaute@free.fr> - 2020-09-19 10:10 +0200
        Re: libvirt guest bridge configuration Reco <recoverym4n@enotuniq.net> - 2020-09-19 10:20 +0200
        Re: libvirt guest bridge configuration Lucio Crusca <lucio@sulweb.org> - 2020-09-19 10:30 +0200
          Re: libvirt guest bridge configuration Fabien Roucaute <fabien.roucaute@free.fr> - 2020-09-19 10:50 +0200
            Re: libvirt guest bridge configuration Lucio Crusca <lucio@sulweb.org> - 2020-09-19 14:40 +0200
              Re: libvirt guest bridge configuration Fabien Roucaute <fabien.roucaute@free.fr> - 2020-09-19 15:30 +0200
                Re: libvirt guest bridge configuration Lucio Crusca <lucio@sulweb.org> - 2020-09-19 16:10 +0200
                Re: libvirt guest bridge configuration Fabien Roucaute <fabien.roucaute@free.fr> - 2020-09-19 16:50 +0200
                [SOLVED] Re: libvirt guest bridge configuration Lucio Crusca <lucio@sulweb.org> - 2020-09-20 12:10 +0200
                Re: [SOLVED] Re: libvirt guest bridge configuration Lucas Castro <lucas@gnuabordo.com.br> - 2020-09-21 20:20 +0200
  Re: libvirt guest bridge configuration john doe <johndoe65534@mail.com> - 2020-09-19 18:40 +0200
  Re: libvirt guest bridge configuration Lucas Castro <lucas@gnuabordo.com.br> - 2020-09-19 23:30 +0200

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