[SOLVED] Bridge and Static IP.

hack3rcon · 05-09-2016, 07:11 AM

Hello.
I use fedora 23 server edition and I want to make a bridge that use static IP not DHCP.
my current config is :

Code:

enp7s0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 172.30.9.20  netmask 255.255.255.0  broadcast 172.30.9.255
        inet6 fe80::52e5:49ff:fe40:c48f  prefixlen 64  scopeid 0x20<link>
        ether 50:e5:49:40:c4:8f  txqueuelen 1000  (Ethernet)
        RX packets 989  bytes 84310 (82.3 KiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 77  bytes 9575 (9.3 KiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

and according to the Xen Project documents (http://wiki.xen.org/wiki/Fedora_Host_Installation) I did :

# touch /etc/sysconfig/network-scripts/ifcfg-br0

Code:

DEVICE=br0
TYPE=Bridge
BOOTPROTO=none
ONBOOT=yes
IPADDR=172.30.9.20
PREFIX=24
GATEWAY=172.30.9.254
DNS1=172.30.9.1
DELAY=0
NM_CONTROLLED=no

and
# nano /etc/sysconfig/network-scripts/ifcfg-enp7s0

Code:

HWADDR=50:E5:49:40:C4:8F
TYPE=Ethernet
BOOTPROTO=none
DEFROUTE=yes
IPV4_FAILURE_FATAL=no
IPV6INIT=yes
IPV6_AUTOCONF=yes
IPV6_DEFROUTE=yes
IPV6_FAILURE_FATAL=no
NAME=enp7s0
UUID=5e520f04-b32c-4116-b61f-89c190868edc
ONBOOT=yes
IPADDR=172.30.9.20
PREFIX=24
GATEWAY=172.30.9.254
DNS1=172.30.9.1
IPV6_PEERDNS=yes
IPV6_PEERROUTES=yes
IPV6_PRIVACY=no
NM_CONTROLLED=no
BRIDGE=br0

and
# systemctl restart network.service

But my bridge not working!!!!
Must I comment all "IPADDR", "PREFIX", "GATEWAY" and "DNS1" in "ifcfg-enp7s0" ?
Please help me.

Tnx.

smallpond · 05-10-2016, 06:17 AM

Your interface must not duplicate the IP setup. That should only be in the bridge config.

https://docs.fedoraproject.org/en-US...rk-bridge.html

hack3rcon · 05-10-2016, 06:18 AM

Problem Solved via comment parts.

ferrari · 05-10-2016, 06:42 AM

AFAIU, only br0 should be assigned with an IP address when configured like this.