Bonding
This article shows how to bond (or aggregate) multiple ethernet interfaces into a bond0 interface.
Note: Alpine Linux v2.4 or later is required
Installation
First, install the bonding package. This will give you support for bonding in the /etc/network/interfaces file.
apk add bonding
Configuration
Edit the /etc/network/interfaces file:
auto bond0 iface bond0 inet static address 192.168.0.2 netmask 255.255.255.0 gateway 192.168.0.1 # specify the ethernet interfaces that should be bonded bond-slaves eth0 eth1 eth2 eth3
The keyword is bond-slaves that will make ifup add the slaves to the bond0 interface.
References: http://www.kernel.org/doc/Documentation/networking/bonding.txt
Bonding with br0
auto bond0 iface bond0 inet manual
bond-slaves eth0 eth1 bond-mode 802.3ad bond-xmit-hash-policy layer2+3
auto br0 iface br0 inet dhcp
bridge-ports bond0 bridge-stp 0