[LEDE-DEV] [PATCH] bcm53xx: fix LAN MAC address for devices that use eth2 originally

[Felix Fietkau]

On 2017-01-31 13:53, Rafał Miłecki wrote:
> From: Rafał Miłecki <rafal at milecki.pl>
> 
> We override default Ethernet interface with eth0 which often uses random
> MAC due to missing proper NVRAM entry. Fix this by manually assigning
> MAC in the config.
> 
> Signed-off-by: Rafał Miłecki <rafal at milecki.pl>
> ---
>  target/linux/bcm53xx/base-files/etc/board.d/02_network | 6 ++++++
>  1 file changed, 6 insertions(+)
> 
> diff --git a/target/linux/bcm53xx/base-files/etc/board.d/02_network b/target/linux/bcm53xx/base-files/etc/board.d/02_network
> index 672b1349df..3c19b574b8 100755
> --- a/target/linux/bcm53xx/base-files/etc/board.d/02_network
> +++ b/target/linux/bcm53xx/base-files/etc/board.d/02_network
> @@ -50,6 +50,12 @@ netgear,r8500)
>  	ifname=eth0
>  	ucidef_add_switch "switch0" \
>  		"0:lan" "1:lan" "2:lan" "3:lan" "4:wan" "5t@$ifname"
> +
> +	# These devices should use eth2 and their eth0 interface often has no
> +	# MAC assigned. Manually assign eth2's MAC to the LAN.
> +	et2macaddr="$(echo $(nvram get et2macaddr))"
Why $(echo $(...))?

- Felix