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How to add a persistent static route to Ubuntu 16.04.2 LTS

Dear Colleagues,

I have brand new Ubuntu 16.04.2 LTS and I would like to understand how to add persistent route to it.

For real example I have a default route with metric 100 (see attachment) and I would like to make this route metric to 10.

Please shed some light to undertanding this concept.
default_routing_table.png

Rajul Raj

You can put static routes in /etc/network/interfaces:

auto eth0
iface eth0 inet static
      address 192.168.1.2
      netmask 255.255.255.0
      up route add -net 192.168.0.0 netmask 255.255.0.0 gw 192.168.1.1
      up route add -net 172.16.0.0 netmask 255.240.0.0 gw 192.168.1.1

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adroman

ASKER

Thank you for you answer, but how to configure metric in this file?

Rajul Raj

Find this example below

auto lo
iface lo inet loopback
auto new0
iface new0 inet static
address xxx.xxx.xxx.xxx
netmask xxx.xxx.xxx.xxx
up route add default gw aaa.aaa.aaa.aaa metric 10
down route del default gw aaa.aaa.aaa.aaa

auto new1
iface new1 inet static
address yyy.yyy.yyy.yyy
netmask yyy.yyy.yyy.yyy
up route add default gw bbb.bbb.bbb.bbb
down route del default gw bbb.bbb.bbb.bbb

adroman

ASKER

Thank you so much!

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