Categories
Linux Mastering Development Ubuntu

Update/Install Network Adapter driver on ubuntu 18.04

Iconsider myself linux newbie even after using it for a year for web development. I’m gaming and encountering Network problems when playing Steam games like CS:GO & DOTA 2. I know this is a Steam app issue but some forum 7 years ago seems to have solve their problem for Steam games/Steam app itself disabling […]

Categories
Linux Mastering Development Ubuntu

Error in network definition: bond0: interface ‘eno2’ is not defined

I get this error when trying to netplan apply. eno2 exists but netplan says it’s not defined. network: version: 2 renderer: networkd bonds: bond0: interfaces: [eno1, eno2] addresses: [192.168.0.104/24] gateway4: 192.168.0.1 parameters: mode: 802.3ad nameservers: addresses: [192.168.0.2] dhcp4: false optional: true 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000 link/loopback […]

Categories
Linux Mastering Development

Pop OS / Ubuntu 20.04; No network interfaces anymore

I installed Pop OS a while ago. Everything work fine. A few days ago, I open my Laptop and my internet connection is lost. I check all settings and realize, that my network devices are lost in the configurations. No network devices When I boot with an installation stick, the devices are visible wired interface […]

Categories
Linux Mastering Development Ubuntu

Cannot connect to Ubuntu Server via SSH over wireless LAN

I installed Ubuntu Server 18.04 in my Raspberry Pi 3B Plus. I configured everything and successfully log in to my account via SSH Private Key on ethernet. However, when it comes to wireless connection, PuTTY stucks while connection time out appears. Configuration was done here: /etc/ssh/sshd_config Everything seems pretty well. When I checked built-in wlan0, […]

Categories
Mastering Development System & Network

How to debug packet loss on QEMU/KVM virtual machine which uses multiple VLAN interfaces on single network card

I have a server running under Debian 10. There’s one (for now) virtual machine under QEMU/KVM. Under some circumstances, server has only one network card, but I need VM to have access to two different networks: 172.16.0.1/24 (internal) and 93.xx.xx.211/29 (external). I managed to set up two VLAN interfaces using systemd-networkd and bridged them into […]

Categories
Linux Mastering Development

Two IP on the same subnetwork

My problem is the following. (kubuntu 14.04 64bits, kernel 4.40) I have a remote computer (on another place, I can’t go on site) that have two network cards. On the second card (eth1), I have a dhcp client which serve the IP 192.168.0.189/24. Through this IP, I can connect with Teamviewer or anydesk. On the first […]

Categories
Mastering Development System & Network

Assign LAN IP to Ethernet device on RPi

I’m trying to use a Raspberry Pi as an wifi-to-ethernet extender. I’ve followed this guide to get to where I am now, which looks like the following, where — is Wi-Fi and === is Ethernet: (Router, 192.168.0.1) — (Laptop, 192.168.0.26) | + — (Raspberry Pi, 192.168.0.10, 192.168.4.1) === (3D Printer, 192.168.4.2) From my laptop, I […]

Categories
Mastering Development System & Network

linux IP routing for multi outgoing address on multi NICs

I have a raspbian OS (linux) on Raspberry Pi 4 with multi NICs: 1 Wifi (wlan0) 2 4G devices (eth0 and eth1) This is my bash result when I’m trying to connect 1 HTTP server on different network interface using CURL pi@raspberrypi:~ $ ip a 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group […]

Categories
Linux Mastering Development Ubuntu

netplan set-name option not working on Freshly Installed Ubuntu 18.04 LTS Desktop Image on Vmware machine

I need to change network card kernel assigned name ens34 to buslan0. However, using the set-name option in netplan config, which matches the device by MAC address, does not work. The OS is fresh install of Ubuntu desktop 18.04 on a virtual machine hypervisor Vmware Workstation Pro. OS: Ubuntu 18.04.4 LTS. ubuntu desktop 5.3.0-53-generic #47~18.04.1-Ubuntu […]

Categories
Linux Mastering Development Ubuntu

netplan set-name option not working on Ubuntu VM

I need to change network card kernel assigned name ens34 to buslan0. However, using the set-name option in netplan config, which matches the device by MAC address, does not work. The OS is fresh install of Ubuntu desktop 18.04 on a virtual machine hypervisor Vmware Workstation Pro. OS: Ubuntu 18.04.4 LTS. ubuntu desktop 5.3.0-53-generic #47~18.04.1-Ubuntu […]