Create a Bridge interface on Linux Host running RHEL/Rocky Linux

 



(base) [root@t480s ~]# nmcli device status

DEVICE           TYPE      STATE                   CONNECTION  

wlp61s0          wifi      connected               HUAWEI-HOME 

enp0s31f6        ethernet  connected               enp0s31f6   

docker0          bridge    connected (externally)  docker0     

lo               loopback  connected (externally)  lo          

virbr0           bridge    connected (externally)  virbr0      

p2p-dev-wlp61s0  wifi-p2p  disconnected            --          

(base) [root@t480s ~]# 

(base) [root@t480s ~]# 

(base) [root@t480s ~]# sudo nmcli con add type bridge ifname br0 con-name br0

Connection 'br0' (5722704f-3f32-45d4-8329-7e24031eb926) successfully added.


(base) [root@t480s ~]# nmcli con add type bridge-slave ifname enp0s31f6 master br0

Connection 'bridge-slave-enp0s31f6' (f7a612e4-0112-4524-bc73-dc2fb8abb45f) successfully added.


(base) [root@t480s ~]# nmcli con modify br0 ipv4.addresses 192.168.3.51/24

(base) [root@t480s ~]# nmcli con modify br0 ipv4.gateway 192.168.3.1

(base) [root@t480s ~]# nmcli con modify br0 ipv4.dns "192.168.3.1 8.8.8.8"

(base) [root@t480s ~]# nmcli con modify br0 ipv4.method manual

(base) [root@t480s ~]# nmcli con modify br0 ipv6.method ignore

(base) [root@t480s ~]# nmcli con modify br0 bridge.stp no

(base) [root@t480s ~]# nmcli connection show

NAME                    UUID                                  TYPE      DEVICE     

enp0s31f6               e7dabef2-a1f0-4aa5-8cab-7b7b5576f30c  ethernet  enp0s31f6 

br0                     5722704f-3f32-45d4-8329-7e24031eb926  bridge    br0       

docker0                 10a7c8c3-13dd-4226-9701-4fc7fd0eb67e  bridge    docker0   

lo                      9fc2a74c-a0ee-47d7-a78a-09a18bc5f80b  loopback  lo        

virbr0                  b1e9f838-ff29-4d96-9c0a-d3970e5b0006  bridge    virbr0    

bridge-slave-enp0s31f6  f7a612e4-0112-4524-bc73-dc2fb8abb45f  ethernet  --        

(base) [root@t480s ~]# nmcli connection down enp0s31f6

Connection 'enp0s31f6' successfully deactivated (D-Bus active path: /org/freedesktop/NetworkManager/ActiveConnection/14)

(base) [root@t480s ~]# nmcli connection up br0

Connection successfully activated (controller waiting for ports) (D-Bus active path: /org/freedesktop/NetworkManager/ActiveConnection/18)


# TESTING:


(base) [root@t480s ~]# ping -c1 www.google.com

PING forcesafesearch.google.com (216.239.38.120) 56(84) bytes of data.

64 bytes from any-in-2678.1e100.net (216.239.38.120): icmp_seq=1 ttl=118 time=14.3 ms


--- forcesafesearch.google.com ping statistics ---

1 packets transmitted, 1 received, 0% packet loss, time 0ms

rtt min/avg/max/mdev = 14.298/14.298/14.298/0.000 ms

(base) [root@t480s ~]# ip addr show br0

14: br0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000

    link/ether e8:6a:64:12:37:8b brd ff:ff:ff:ff:ff:ff

    inet 192.168.3.51/24 brd 192.168.3.255 scope global noprefixroute br0

       valid_lft forever preferred_lft forever

    inet6 fe80::ea6a:64ff:fe12:378b/64 scope link 

       valid_lft forever preferred_lft forever

(base) [root@t480s ~]# nmcli device status

DEVICE           TYPE      STATE                   CONNECTION             

br0              bridge    connected               br0                    

wlp61s0          wifi      connected               HUAWEI-HOME            

enp0s31f6        ethernet  connected               bridge-slave-enp0s31f6 

docker0          bridge    connected (externally)  docker0                

lo               loopback  connected (externally)  lo                     

virbr0           bridge    connected (externally)  virbr0                 

p2p-dev-wlp61s0  wifi-p2p  disconnected            --                     

(base) [root@t480s ~]# 

(base) [root@t480s ~]# 

(base) [root@t480s ~]# wget www.google.com

--2026-01-01 10:59:53--  http://www.google.com/

Resolving www.google.com (www.google.com)... 216.239.38.120, 2001:4860:4802:32::78

Connecting to www.google.com (www.google.com)|216.239.38.120|:80... connected.

HTTP request sent, awaiting response... 200 OK

Length: unspecified [text/html]

Saving to: ‘index.html’


index.html                                     [ <=>                                                                                     ]  20.27K  --.-KB/s    in 0.01s   


2026-01-01 10:59:53 (1.97 MB/s) - ‘index.html’ saved [20758]


(base) [root@t480s ~]#

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