Configurar placa de rede para o modo bond (balanceada)

Verificar se o modo bond está configurado no boot services

root@firewall:~# grep -i config_bonding /boot/config-4.4.0-131-generic 
CONFIG_BONDING=m

Verificar se o serviço ifenslave está instalado

root@firewall:~# dpkg -l ifenslave
Desired=Unknown/Install/Remove/Purge/Hold
| Status=Not/Inst/Conf-files/Unpacked/halF-conf/Half-inst/trig-aWait/Trig-pend
|/ Err?=(none)/Reinst-required (Status,Err: uppercase=bad)
||/ Name           Version      Architecture Description
+++-==============-============-============-=================================
ii  ifenslave      2.7ubuntu1   all          configure network interfaces for 

Editar o arquivo interfaces para incluir as configurações das placas

vim /etc/network/interfaces

Arquivo interface

 13 # Configuração da placa de rede interna enp0s8 - slave da bond0
 14 
 15 auto enp0s8
 16 iface enp0s8 inet manual
 17         bond-master bond0
 18 
 19 # Configuração da placa de rede interna enp0s9 - slave da bound0
 20 
 21 auto enp0s9
 22 iface enp0s9 inet manual
 23         bond-master bond0
 24 
 25 # Configuração da placa de rede virtual bond0
 26 
 27 auto bond0
 28 iface bond0 inet static
 29         address 10.10.10.1
 30         netmask 255.255.255.0
 31 #       dns-nameservers 8.8.8.8
 32 #       dns-search empresa.local
 33 # Configuração bounding #
 34         bond-mode 0
 35         bond-miimon 100
 13 # Configuração da placa de rede interna enp0s8 - slave da bond0
 14 
 15 auto enp0s8
 16 iface enp0s8 inet manual
 17         bond-master bond0
 18 
 19 # Configuração da placa de rede interna enp0s9 - slave da bound0
 20 
 21 auto enp0s9
 22 iface enp0s9 inet manual
 23         bond-master bond0
 24 
 25 # Configuração da placa de rede virtual bond0
 26 
 27 auto bond0
 28 iface bond0 inet static
 29         address 10.10.10.1
 30         netmask 255.255.255.0
 31 #       dns-nameservers 8.8.8.8
 32 #       dns-search empresa.local
 33 # Configuração bounding #
 34         bond-mode 0
 35         bond-miimon 100

Após a configuração, reiniciar o network services

systemctl restart networking

E ver o ifconfig

bond0     Link encap:Ethernet  HWaddr 08:00:27:cc:7f:94  
          inet addr:10.10.10.1  Bcast:10.10.10.255  Mask:255.255.255.0
          inet6 addr: fe80::a00:27ff:fecc:7f94/64 Scope:Link
          UP BROADCAST RUNNING MASTER MULTICAST  MTU:1500  Metric:1
          RX packets:1 errors:0 dropped:0 overruns:0 frame:0
          TX packets:3 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:78 (78.0 B)  TX bytes:258 (258.0 B)

enp0s3    Link encap:Ethernet  HWaddr 08:00:27:36:31:35  
          inet addr:10.0.2.15  Bcast:10.0.2.255  Mask:255.255.255.0
          inet6 addr: fe80::a00:27ff:fe36:3135/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:719 errors:0 dropped:0 overruns:0 frame:0
          TX packets:436 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:57461 (57.4 KB)  TX bytes:63283 (63.2 KB)

enp0s8    Link encap:Ethernet  HWaddr 08:00:27:cc:7f:94  
          UP BROADCAST RUNNING SLAVE MULTICAST  MTU:1500  Metric:1
          RX packets:1 errors:0 dropped:0 overruns:0 frame:0
          TX packets:1 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:78 (78.0 B)  TX bytes:90 (90.0 B)
enp0s9    Link encap:Ethernet  HWaddr 08:00:27:cc:7f:94  
          UP BROADCAST RUNNING SLAVE MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:2 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:0 (0.0 B)  TX bytes:168 (168.0 B)

lo        Link encap:Local Loopback  
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:65536  Metric:1
          RX packets:160 errors:0 dropped:0 overruns:0 frame:0
          TX packets:160 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1 
          RX bytes:11840 (11.8 KB)  TX bytes:11840 (11.8 KB)

Verificando no arquivo de kernel do server

root@firewall:~# cat /proc/net/bonding/bond0 
Ethernet Channel Bonding Driver: v3.7.1 (April 27, 2011)

Bonding Mode: load balancing (round-robin)
MII Status: up
MII Polling Interval (ms): 100
Up Delay (ms): 0
Down Delay (ms): 0

Slave Interface: enp0s9
MII Status: up
Speed: 1000 Mbps
Duplex: full
Link Failure Count: 0
Permanent HW addr: 08:00:27:cc:7f:94
Slave queue ID: 0

Slave Interface: enp0s8
MII Status: up
Speed: 1000 Mbps
Duplex: full
Link Failure Count: 0
Permanent HW addr: 08:00:27:cc:a3:42
Slave queue ID: 0