Re: libvirt guest bridge configuration

[kjonca@poczta.onet.pl (Kamil Jońca)]

Lucio Crusca <lucio@sulweb.org> writes:

> 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

My config:
iface qemu inet static
        address 192.168.55.1
        netmask 255.255.255.0
        bridge_ports none

Please note "none" at bridge_ports, no need use virbr-dummy.
It is not clear to me why you manually set routing.
KJ



-- 
http://wolnelektury.pl/wesprzyj/teraz/
People who have what they want are very fond of telling people who haven't
what they want that they don't want it.
		-- Ogden Nash