Can't create a macvlan port when the parent port is on the bridge？

Installing and Using OpenWrt Network and Wireless Configuration
1

Hello,
In my device, the parent ports eth0 and eth1 are on br-lan


bridge name     bridge id               STP enabled     interfaces
br-lan          7fff.7811dc47d35c       no               eth0                                                     
                                                         eth1

I want to create a macvlan port with eth0 as the parent port, but it is displayed RTNETLINK answers: Device or resource busy

ip link add link eth0 veth type macvlan

RTNETLINK answers: Device or resource busy

Is there a way to create the macvlan port when the parent port is on the bridge?

2

I don't think you can create a macvlan interface on an already "enslaved" port, but you can use br-lan as the parent interface (if that suits you).

3

Thanks, I have solved this problem by modifying the kernel.

1 Like
4

Hello, do you know how to set a mac for macvlan port instead of randomly generating it？

5 
config device 'veth0'
        option name 'veth0'
        option type 'macvlan'
        option ifname 'br-lan'
        option macaddr 'aa:bb:cc:dd:ee:ff'

config interface 'virt0'
        option proto 'static'
        option device 'veth0'
        ...

root@OpenWrt:~# ip link show dev veth0
5: veth0@br-lan: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP mode DEFAULT group default qlen 1000
    link/ether aa:bb:cc:dd:ee:ff brd ff:ff:ff:ff:ff:ff
1 Like
6

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