I had an opportunity recently to install Ubuntu Server on a very old server, a Dell R710 that had 4 native network interfaces and 4 add-on network interfaces, resulting in a total of 8 network interfaces.<\/p>\n\n\n\n
During the installation process, the installer did recognize all the physical network interfaces on the machine but because it did not successfully acquire DHCP addresses, I was forced to install Ubuntu without networking.<\/p>\n\n\n\n
After the installation, only the loop back ( I first created the Followed by editing the 50-cloud-init.yaml file with the following contents:<\/p>\n\n\n\n Once netplan is configured, I then executed the following command:<\/p>\n\n\n\n Once I rebooted<\/em><\/strong> the computer, the Much of the content in this blog is a verbatim reference from the article but I provided here so that it is more easily searched by me if I ever needed it in the future.<\/p>\n","protected":false},"excerpt":{"rendered":" I had an opportunity recently to install Ubuntu Server on a very old server, a Dell R710 that had 4 native network interfaces and 4 add-on network interfaces, resulting in a total of 8 network interfaces. During the installation process, the installer did recognize all the physical network interfaces on the machine but because it … Continue reading “Ubuntu Server Missing Network Interface”<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[111],"tags":[],"class_list":["post-943","post","type-post","status-publish","format-standard","hentry","category-tech"],"jetpack_featured_media_url":"","jetpack_shortlink":"https:\/\/wp.me\/p7V6i8-fd","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/blog.lufamily.ca\/kang\/wp-json\/wp\/v2\/posts\/943","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.lufamily.ca\/kang\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.lufamily.ca\/kang\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.lufamily.ca\/kang\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.lufamily.ca\/kang\/wp-json\/wp\/v2\/comments?post=943"}],"version-history":[{"count":3,"href":"https:\/\/blog.lufamily.ca\/kang\/wp-json\/wp\/v2\/posts\/943\/revisions"}],"predecessor-version":[{"id":946,"href":"https:\/\/blog.lufamily.ca\/kang\/wp-json\/wp\/v2\/posts\/943\/revisions\/946"}],"wp:attachment":[{"href":"https:\/\/blog.lufamily.ca\/kang\/wp-json\/wp\/v2\/media?parent=943"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.lufamily.ca\/kang\/wp-json\/wp\/v2\/categories?post=943"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.lufamily.ca\/kang\/wp-json\/wp\/v2\/tags?post=943"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}lo<\/code>) interface existed and all the other physical interfaces were missing. I had to use the netplan<\/code> command to create the interfaces. This article<\/a> was of tremendous help. I pretty well just followed its instructions.<\/p>\n\n\n\n99-disable-network-config.cfg<\/code> file with the contents as instructed by the article. <\/p>\n\n\n\nsudo su -\n\necho \"network: {config: disabled}\" >> \/etc\/cloud\/cloud.cfg.d\/99-disable-network-config.cfg<\/code><\/pre>\n\n\n\nvim \/etc\/netplan\/50-cloud-init.yaml<\/code><\/pre>\n\n\n\n# This file is generated from information provided by\n# the datasource. Changes to it will not persist across an instance.\n# To disable cloud-init's network configuration capabilities, write a file\n# \/etc\/cloud\/cloud.cfg.d\/99-disable-network-config.cfg with the following:\n# network: {config: disabled}\nnetwork:\n version: 2\n renderer: networkd\n ethernets:\n eno1:\n dhcp4: true<\/code><\/pre>\n\n\n\nnetplan generate\nnetplan apply<\/code><\/pre>\n\n\n\neno1<\/code> network interface now exists with a provisioned IP from my local DHCP server.<\/p>\n\n\n\n