<div dir="ltr"><div dir="ltr"><div class="gmail_default" style="font-family:monospace,monospace">On Mon, May 8, 2023 at 10:50 AM Robin Becker <<a href="mailto:robin@reportlab.com">robin@reportlab.com</a>> wrote: </div></div><div class="gmail_quote"><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">On 08/05/2023 15:04, Thomas Haller wrote: > Hi, > > ......... > > Why? After moving the port to the bridge, the "new" configuration is > supposed to work. Just add the IP addresses (or `ipv4.method=auto`) on > the bridge profile, instead of the eno1 profile from before. ....... I am almost certain this is right, but perhaps my router is interfering. I will try again and perhaps I need to clear my head around what's talking to what. Since the router assigns using a mac address perhaps I need to force the bridge and/or the nic to be more specific and just fix the addresses. > It's not clear to me what a "sub interface eno1.1" is. Where does this > recommendation come from? I get this from <a href="https://linuxconfig.org/how-to-use-bridged-networking-with-libvirt-and-kvm" rel="noreferrer" target="_blank">https://linuxconfig.org/how-to-use-bridged-networking-with-libvirt-and-kvm</a> under "Adding a physical ethernet interface to the bridge" On our old servers in /etc/network/interfaces we have sections like # The primary network interface auto eno1 iface eno1 inet static address yy.yy.yy.yy netmask 255.255.240.0 auto eno1:0 iface eno1:0 inet static address xx.xx.xx.xx netmask 255.255.240.0 so I assumed I could do something similar with NM and have two connections using the same physical device. I am no networking genius though</blockquote><div> </div><div class="gmail_default" style="font-family:monospace,monospace">I use NM to do exactly what you are trying with the exception of setting a fixed MAC on the bridge interface. I configured it all with nm-connection-editor, but I will be more than happy to share the generated config files with you (hope it helps) and by the way I use bridge0 as the interface in Qemu/LibVirt/Boxes, etc..</div><div class="gmail_default" style="font-family:monospace,monospace"> </div><div class="gmail_default" style="font-family:monospace,monospace">[greg@carbon-x1--g10 ~]$ ip a 2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel master bridge0 state UP group default qlen 1000 link/ether 00:e0:4c:68:07:d2 brd ff:ff:ff:ff:ff:ff altname enp0s13f0u3u1 4: bridge0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000 link/ether 00:e0:4c:68:07:d2 brd ff:ff:ff:ff:ff:ff inet <a href="http://192.168.1.10/24">192.168.1.10/24</a> brd 192.168.1.255 scope global dynamic noprefixroute bridge0 valid_lft 78669sec preferred_lft 78669sec </div><div class="gmail_default" style="font-family:monospace,monospace"> </div><div class="gmail_default" style="font-family:monospace,monospace">eth0 is my wired dongle (assigned to "bridgeo port 1")</div><div class="gmail_default" style="font-family:monospace,monospace">bridge0 is the bridge</div><div class="gmail_default" style="font-family:monospace,monospace"> </div><div class="gmail_default" style="font-family:monospace,monospace">You should just be able to tell the bridge after it is created to preserve eth0's MAC address.</div><div class="gmail_default" style="font-family:monospace,monospace"> </div><div class="gmail_default" style="font-family:monospace,monospace">[greg@carbon-x1--g10 ~]$ nmcli connection NAME UUID TYPE DEVICE bridge0 fafed9b3-8dad-4552-b1b4-0f620d985eb3 bridge bridge0 bridge0 port 1 2b7a76c4-4bef-4c46-a5e8-3129b6361582 ethernet eth0 Wired - LenovoBed Dongle 3ba19fca-63e3-3975-b5e3-69bb6b56ea5c ethernet -- </div><div class="gmail_default" style="font-family:monospace,monospace"></div><div class="gmail_default" style="font-family:monospace,monospace"><a href="http://connection.id">connection.id</a>: Wired - LenovoBed Dongle connection.uuid: 3ba19fca-63e3-3975-b5e3-69bb6b56ea5c connection.stable-id: -- connection.type: 802-3-ethernet connection.interface-name: eth0 connection.autoconnect: yes connection.autoconnect-priority: -999 connection.autoconnect-retries: -1 (default) connection.multi-connect: 0 (default) connection.auth-retries: -1 connection.timestamp: 1682522928 connection.read-only: no connection.permissions: -- connection.zone: -- connection.master: -- connection.slave-type: -- connection.autoconnect-slaves: -1 (default) connection.secondaries: -- connection.gateway-ping-timeout: 0 connection.metered: unknown connection.lldp: default connection.mdns: -1 (default) connection.llmnr: -1 (default) connection.dns-over-tls: -1 (default) connection.mptcp-flags: 0x0 (default) connection.wait-device-timeout: -1 connection.wait-activation-delay: -1 802-3-ethernet.port: -- 802-3-ethernet.speed: 0 802-3-ethernet.duplex: -- 802-3-ethernet.auto-negotiate: no 802-3-ethernet.mac-address: 00:E0:4C:68:07:D2 802-3-ethernet.cloned-mac-address: preserve 802-3-ethernet.generate-mac-address-mask:-- 802-3-ethernet.mac-address-blacklist: -- 802-3-ethernet.mtu: auto 802-3-ethernet.s390-subchannels: -- 802-3-ethernet.s390-nettype: -- 802-3-ethernet.s390-options: -- 802-3-ethernet.wake-on-lan: default 802-3-ethernet.wake-on-lan-password: -- 802-3-ethernet.accept-all-mac-addresses:-1 (default) ipv4.method: auto ipv4.dns: -- ipv4.dns-search: -- ipv4.dns-options: -- ipv4.dns-priority: 0 ipv4.addresses: -- ipv4.gateway: -- ipv4.routes: -- ipv4.route-metric: -1 ipv4.route-table: 0 (unspec) ipv4.routing-rules: -- ipv4.replace-local-rule: -1 (default) ipv4.ignore-auto-routes: no ipv4.ignore-auto-dns: no ipv4.dhcp-client-id: -- ipv4.dhcp-iaid: -- ipv4.dhcp-timeout: 0 (default) ipv4.dhcp-send-hostname: yes ipv4.dhcp-hostname: -- ipv4.dhcp-fqdn: -- ipv4.dhcp-hostname-flags: 0x0 (none) ipv4.never-default: no ipv4.may-fail: yes ipv4.required-timeout: -1 (default) ipv4.dad-timeout: -1 (default) ipv4.dhcp-vendor-class-identifier: -- ipv4.link-local: 0 (default) ipv4.dhcp-reject-servers: -- ipv4.auto-route-ext-gw: -1 (default) ipv6.method: disabled ipv6.dns: -- ipv6.dns-search: -- ipv6.dns-options: -- ipv6.dns-priority: 0 ipv6.addresses: -- ipv6.gateway: -- ipv6.routes: -- ipv6.route-metric: -1 ipv6.route-table: 0 (unspec) ipv6.routing-rules: -- ipv6.replace-local-rule: -1 (default) ipv6.ignore-auto-routes: no ipv6.ignore-auto-dns: no ipv6.never-default: no ipv6.may-fail: yes ipv6.required-timeout: -1 (default) ipv6.ip6-privacy: -1 (unknown) ipv6.addr-gen-mode: stable-privacy ipv6.ra-timeout: 0 (default) ipv6.mtu: auto ipv6.dhcp-duid: -- ipv6.dhcp-iaid: -- ipv6.dhcp-timeout: 0 (default) ipv6.dhcp-send-hostname: yes ipv6.dhcp-hostname: -- ipv6.dhcp-hostname-flags: 0x0 (none) ipv6.auto-route-ext-gw: -1 (default) ipv6.token: -- proxy.method: none proxy.browser-only: no proxy.pac-url: -- proxy.pac-script: -- </div><div class="gmail_default" style="font-family:monospace,monospace"> </div><div class="gmail_default" style="font-family:monospace,monospace">[greg@carbon-x1--g10 ~]$ nmcli connection show bridge0 <a href="http://connection.id">connection.id</a>: bridge0 connection.uuid: fafed9b3-8dad-4552-b1b4-0f620d985eb3 connection.stable-id: -- connection.type: bridge connection.interface-name: bridge0 connection.autoconnect: yes connection.autoconnect-priority: 0 connection.autoconnect-retries: -1 (default) connection.multi-connect: 0 (default) connection.auth-retries: -1 connection.timestamp: 1683556900 connection.read-only: no connection.permissions: -- connection.zone: -- connection.master: -- connection.slave-type: -- connection.autoconnect-slaves: -1 (default) connection.secondaries: -- connection.gateway-ping-timeout: 0 connection.metered: unknown connection.lldp: default connection.mdns: -1 (default) connection.llmnr: -1 (default) connection.dns-over-tls: -1 (default) connection.mptcp-flags: 0x0 (default) connection.wait-device-timeout: -1 connection.wait-activation-delay: -1 802-3-ethernet.port: -- 802-3-ethernet.speed: 0 802-3-ethernet.duplex: -- 802-3-ethernet.auto-negotiate: no 802-3-ethernet.mac-address: -- 802-3-ethernet.cloned-mac-address: -- 802-3-ethernet.generate-mac-address-mask:-- 802-3-ethernet.mac-address-blacklist: -- 802-3-ethernet.mtu: auto 802-3-ethernet.s390-subchannels: -- 802-3-ethernet.s390-nettype: -- 802-3-ethernet.s390-options: -- 802-3-ethernet.wake-on-lan: default 802-3-ethernet.wake-on-lan-password: -- 802-3-ethernet.accept-all-mac-addresses:-1 (default) ipv4.method: auto ipv4.dns: -- ipv4.dns-search: -- ipv4.dns-options: -- ipv4.dns-priority: 0 ipv4.addresses: -- ipv4.gateway: -- ipv4.routes: -- ipv4.route-metric: -1 ipv4.route-table: 0 (unspec) ipv4.routing-rules: -- ipv4.replace-local-rule: -1 (default) ipv4.ignore-auto-routes: no ipv4.ignore-auto-dns: no ipv4.dhcp-client-id: -- ipv4.dhcp-iaid: -- ipv4.dhcp-timeout: 0 (default) ipv4.dhcp-send-hostname: yes ipv4.dhcp-hostname: -- ipv4.dhcp-fqdn: -- ipv4.dhcp-hostname-flags: 0x0 (none) ipv4.never-default: no ipv4.may-fail: yes ipv4.required-timeout: -1 (default) ipv4.dad-timeout: -1 (default) ipv4.dhcp-vendor-class-identifier: -- ipv4.link-local: 0 (default) ipv4.dhcp-reject-servers: -- ipv4.auto-route-ext-gw: -1 (default) ipv6.method: disabled ipv6.dns: -- ipv6.dns-search: -- ipv6.dns-options: -- ipv6.dns-priority: 0 ipv6.addresses: -- ipv6.gateway: -- ipv6.routes: -- ipv6.route-metric: -1 ipv6.route-table: 0 (unspec) ipv6.routing-rules: -- ipv6.replace-local-rule: -1 (default) ipv6.ignore-auto-routes: no ipv6.ignore-auto-dns: no ipv6.never-default: no ipv6.may-fail: yes ipv6.required-timeout: -1 (default) ipv6.ip6-privacy: -1 (unknown) ipv6.addr-gen-mode: stable-privacy ipv6.ra-timeout: 0 (default) ipv6.mtu: auto ipv6.dhcp-duid: -- ipv6.dhcp-iaid: -- ipv6.dhcp-timeout: 0 (default) ipv6.dhcp-send-hostname: yes ipv6.dhcp-hostname: -- ipv6.dhcp-hostname-flags: 0x0 (none) ipv6.auto-route-ext-gw: -1 (default) ipv6.token: -- bridge.mac-address: -- bridge.stp: no bridge.priority: 32768 bridge.forward-delay: 15 bridge.hello-time: 2 bridge.max-age: 20 bridge.ageing-time: 300 bridge.group-forward-mask: 0 bridge.multicast-snooping: yes bridge.vlan-filtering: no bridge.vlan-default-pvid: 1 bridge.vlans: -- proxy.method: none proxy.browser-only: no proxy.pac-url: -- proxy.pac-script: -- <a href="http://GENERAL.NAME">GENERAL.NAME</a>: bridge0 GENERAL.UUID: fafed9b3-8dad-4552-b1b4-0f620d985eb3 GENERAL.DEVICES: bridge0 GENERAL.IP-IFACE: bridge0 GENERAL.STATE: activated GENERAL.DEFAULT: yes GENERAL.DEFAULT6: no GENERAL.SPEC-OBJECT: -- GENERAL.VPN: no GENERAL.DBUS-PATH: /org/freedesktop/NetworkManager/ActiveConnection/2 GENERAL.CON-PATH: /org/freedesktop/NetworkManager/Settings/2 GENERAL.ZONE: -- GENERAL.MASTER-PATH: -- IP4.ADDRESS[1]: <a href="http://192.168.1.10/24">192.168.1.10/24</a> IP4.GATEWAY: 192.168.1.254 IP4.ROUTE[1]: dst = <a href="http://192.168.1.0/24">192.168.1.0/24</a>, nh = 0.0.0.0, mt = 425 IP4.ROUTE[2]: dst = <a href="http://0.0.0.0/0">0.0.0.0/0</a>, nh = 192.168.1.254, mt = 425 IP4.DNS[1]: 192.168.1.254 IP4.DOMAIN[1]: <a href="http://attlocal.net">attlocal.net</a> DHCP4.OPTION[1]: dhcp_client_identifier = 01:00:e0:4c:68:07:d2 DHCP4.OPTION[2]: dhcp_lease_time = 86400 DHCP4.OPTION[3]: dhcp_server_identifier = 192.168.1.254 DHCP4.OPTION[4]: domain_name = <a href="http://attlocal.net">attlocal.net</a> DHCP4.OPTION[5]: domain_name_servers = 192.168.1.254 DHCP4.OPTION[6]: expiry = 1683643300 DHCP4.OPTION[7]: ip_address = 192.168.1.10 DHCP4.OPTION[8]: requested_broadcast_address = 1 DHCP4.OPTION[9]: requested_domain_name = 1 DHCP4.OPTION[10]: requested_domain_name_servers = 1 DHCP4.OPTION[11]: requested_domain_search = 1 DHCP4.OPTION[12]: requested_host_name = 1 DHCP4.OPTION[13]: requested_interface_mtu = 1 DHCP4.OPTION[14]: requested_ms_classless_static_routes = 1 DHCP4.OPTION[15]: requested_nis_domain = 1 DHCP4.OPTION[16]: requested_nis_servers = 1 DHCP4.OPTION[17]: requested_ntp_servers = 1 DHCP4.OPTION[18]: requested_rfc3442_classless_static_routes = 1 DHCP4.OPTION[19]: requested_root_path = 1 DHCP4.OPTION[20]: requested_routers = 1 DHCP4.OPTION[21]: requested_static_routes = 1 DHCP4.OPTION[22]: requested_subnet_mask = 1 DHCP4.OPTION[23]: requested_time_offset = 1 DHCP4.OPTION[24]: requested_wpad = 1 DHCP4.OPTION[25]: routers = 192.168.1.254 DHCP4.OPTION[26]: subnet_mask = 255.255.255.0 IP6.GATEWAY: -- </div><div class="gmail_default" style="font-family:monospace,monospace"> </div><div class="gmail_default" style="font-family:monospace,monospace">[greg@carbon-x1--g10 ~]$ nmcli connection show "bridge0 port 1" <a href="http://connection.id">connection.id</a>: bridge0 port 1 connection.uuid: 2b7a76c4-4bef-4c46-a5e8-3129b6361582 connection.stable-id: -- connection.type: 802-3-ethernet connection.interface-name: eth0 connection.autoconnect: yes connection.autoconnect-priority: 0 connection.autoconnect-retries: -1 (default) connection.multi-connect: 0 (default) connection.auth-retries: -1 connection.timestamp: 1683556900 connection.read-only: no connection.permissions: -- connection.zone: -- connection.master: bridge0 connection.slave-type: bridge connection.autoconnect-slaves: -1 (default) connection.secondaries: -- connection.gateway-ping-timeout: 0 connection.metered: unknown connection.lldp: default connection.mdns: -1 (default) connection.llmnr: -1 (default) connection.dns-over-tls: -1 (default) connection.mptcp-flags: 0x0 (default) connection.wait-device-timeout: -1 connection.wait-activation-delay: -1 802-3-ethernet.port: -- 802-3-ethernet.speed: 0 802-3-ethernet.duplex: -- 802-3-ethernet.auto-negotiate: no 802-3-ethernet.mac-address: 00:E0:4C:68:07:D2 802-3-ethernet.cloned-mac-address: preserve 802-3-ethernet.generate-mac-address-mask:-- 802-3-ethernet.mac-address-blacklist: -- 802-3-ethernet.mtu: auto 802-3-ethernet.s390-subchannels: -- 802-3-ethernet.s390-nettype: -- 802-3-ethernet.s390-options: -- 802-3-ethernet.wake-on-lan: default 802-3-ethernet.wake-on-lan-password: -- 802-3-ethernet.accept-all-mac-addresses:-1 (default) bridge-port.priority: 32 bridge-port.path-cost: 100 bridge-port.hairpin-mode: no bridge-port.vlans: -- <a href="http://GENERAL.NAME">GENERAL.NAME</a>: bridge0 port 1 GENERAL.UUID: 2b7a76c4-4bef-4c46-a5e8-3129b6361582 GENERAL.DEVICES: eth0 GENERAL.IP-IFACE: eth0 GENERAL.STATE: activated GENERAL.DEFAULT: no GENERAL.DEFAULT6: no GENERAL.SPEC-OBJECT: -- GENERAL.VPN: no GENERAL.DBUS-PATH: /org/freedesktop/NetworkManager/ActiveConnection/1 GENERAL.CON-PATH: /org/freedesktop/NetworkManager/Settings/1 GENERAL.ZONE: -- GENERAL.MASTER-PATH: /org/freedesktop/NetworkManager/Devices/4 IP4.GATEWAY: -- IP6.GATEWAY: -- </div><div class="gmail_default" style="font-family:monospace,monospace"> </div><div class="gmail_default" style="font-family:monospace,monospace"> 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