Questions tagged [routing]

Use this tag when the topic is related to managing the paths that IP traffic will take. This includes subnets created by access points, and on the high end it could be multiple feeds coming through a Cisco unit.

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Ubuntu Server 20.04 networking routing table is not working in VirtualBox

Ubuntu Server 20.04 networking configuration is not working properly in VirtualBox. I can't connect to the internet and the ssh connection is not working. Please see attached screenshots for each ...
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How do I implement React url routes so they don't redirect to 404 with nginx

I have a react app on a digitalocean droplet running Ubuntu 18.04.3 I have an nginx default file in etc/nginx/sites-enabled The file is like this: upstream my_upstream { server 127.0.0.1:...
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Error configuring static routing using cli

I'm trying to add a static route on my Ubuntu Desktop 16.04 machine with the cli, but with no success. I'm using the classic ip route command: ip route add x.x.x.0/24 via y.y.y.y dev eno1 (hid the ...
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Redirect traffic from server on cloud to another machine on local host in VPN

I have a virtual server instance on a cloud with Ubuntu 18.04 running on it which has public ip 123.456.789.100 (dummy ip here). I installed OpenVPN server which has added private ip of virtual server ...
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Default route being added randomly while NIC is already up, post-up action doesn't help

I have an Ubuntu 16.04 machine that I'm using as a temporary router while I fix some issues with my normal router. The network looks like this: Thus, the normal flow of traffic out to the internet ...
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Access a remote device connected through VPN

I've been searching for a solution to this, but I can't seem to find anything close. I have a LAN (192.168.0.x) and I've set up an OpenVPN (10.8.0.x) to access my LAN from outside. I am not an expert ...
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How do I set the modem route metric to 50?

The cellular configuration file for NetworkManger has the route metric set to 50. But on boot the route metric for the modem connection is 700. When the connection is taken down and brought back up ...
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82 views

Make a permanent route change to a specific IP through a specific interface

I have a setup where I use a 10G bond to work with a remote system, but it intermittently gets disconnected, as traffic will occasionally be routed over another interface. I think I have the problem ...
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Can not ping from one node to another while both nodes connected via an ethernet cable

I have two ubuntu machines each with two physical NICs. I am trying to create a private network between two of them connecting of one node's NIC with the other node's NIC. In Node 1 when I run ...
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25 views

How to view all current networks around me

I have an Ubuntu Server hosted on a raspberry pi 4. There is no desktop on it, only a terminal. I am trying to figure out how I could view all possible networks around me I could connect to. Then, I’d ...
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routing packets to default gateway

I've got two networks (NET0, NET1) and my default gatway to ISP is in NET0. Routing between NET0 and NET1 is done by an Ubuntu Server (GATEWAY1). Everything works fine, all hosts in NET0 and NET1 are ...
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Multiple NIC Configuration Stopped Working ( Multiple NIC on Same Subnet) Routing Issues

Server : Ubuntu Server 18.04.4 Router : pfSense 2.4.4 Switch : tp-link TL-SG1016DE The Short : How do I configure multiple NIC on the same subnet/VLAN? Would like traffic that goes in one NIC to ...
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How can I connect to a Windows 10 remote desktop over openfortivpn from behind a router?

I am trying to set up a remote desktop to my office Windows 10 machine from my home PC running Ubuntu 19.10, using Remmina. My home router is a Synology RT2600ac. My company uses a Fortinet SSL-VPN, ...
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DHCP server distributes IP but doesn't allow Internet access for clients? (Ubuntu Server 18.04.4)

Interfaces: enp3s5 - lan enp3s6 - wan Gateway settings: Installed Ubuntu Server 18.04.4 x64 [ MD5:5c43d0b0ade0b554c2d51c85e5f0095b ] Installed pppoeconf Disabled and removed netplan: sudo nano /...
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What might cause my server to lose network routes?

I'm using a server running Ubuntu to monitor a number of servers in various network zones in my hosting environment. To allow this server to contact all the servers it monitors I manually added a ...
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un-configuring domain-password for isis, routes are not getting flushed in self/peernodes

IN IS-IS , if domain-password yyyy is applied to all routers, route gets learnt properly in all routers. If domain-password is removed for any of the router, route table is not getting flushed out ...
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Host can only ping another host if fhe former is pinged first

I have one Ubuntu 18.04 laptop and one Lubuntu 18.04 laptop. The Lubuntu laptop can't ping the Ubuntu laptop ("No route to host") until the Ubuntu laptop pings the Lubuntu laptop first (which works ...
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Need Help on Ubuntu Server 18.04.1 Static Routing

I'm a newbie when it comes to Ubuntu Server. And I am currently having a difficult time configuring a Static Route. I have an Asterisk Server Hosted on my Ubuntu Server Machine, It has 2 NICs enter ...
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Trying to route traffic through a tunnel server error: “Nexthop has invalid gateway”

Short version: we have servers in another data center and we have an openvpn tunnel between them. For the first time, I need to hang server on a different subnet from the tunnel server and I'm ...
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What is defining the routing table?

Some script, somewhere, is defining the routing table for a Ubuntu 16.04 system and we can't figure out what. It isn't in /etc/udev/, /etc/network/, /etc/systemd/, /etc/init.d/ or any other likely ...
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Two default routes: ethernet + wifi — error? consequence?

In my netplan config I have two interfaces: network: version: 2 renderer: networkd ethernets: ethusb1: dhcp4: yes dhcp6: yes wifis: wlp3s0: dhcp4: yes dhcp6: ...
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Why use iptables-persistent?

What is the advantage of iptables-persistent over an init script? I checked the output of iptables-save, and there were a couple gorillion lines, from docker and others. What trouble might I run into ...
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UFW routing blocks ping or HTTP responses but i configured it

i recently installed Wireguard. It works so far. But if i want to call a website through it, it doesn't work. I use UFW. Steps i made: configured wireguard interface, port and keys + peer configured ...
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VPN configuration with same remote and local gatway IP address

I have an issue with VPN routing when the local default gateway is the same as that on the remote network. Here is the case config: VPN network: 192.168.100.0/24 Remote Services network (reached ...
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Udp Routing with 2 ports

I'm trying to pull udp stream to my ubuntu 14.04 and can't handle routing. I'm having 2 ports 1. is port with internet connection(local adress) 2. is port with udp multicast streams with dynamic ...
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Routing between two Lans using 4 NICs and bonds balance-tlb or balance-alb

I am using Ubuntu Server 18.04LTS and netplan There are two lans 10.96.26.0 with subnet mask 255.255.254.0 and 10.97.120.0 with subnet mask 255.255.252.0 I want to connect the two lans using ...
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Default gateway messed up in routing table after changing subnet

The subnet of the host changed from 192.168.0.0/24 to 192.168.1.0/24, and therefore I changed the IP address (static set in /etc/network/interfaces) from 192.168.0.152 to 192.168.1.152, as well as the ...
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Understanding lines in the routing table

Below is my route table where XXX.XX.XX represents part of my public IP. I've been googling for about a week now trying to make OpenVPN work. First I couldn't SSH once running OpenVPN, then I tried ...
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196 views

OpenVPN tun0 routing on server

I have an OpenVPN tun0 10.8.0.0 255.255.255.0 There is an interface on the server eth1 for 192.168.0.0 255.255.255.0 I would like to route the OpenVPN connections to access the 192.168.0.0 network. ...
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ip route add — Error: either “to” is duplicate, or “10.0.0.1” is a garbage

19.04 The system boots without a default route. Then when I try to add a default route, there is this error. The error occurs even when I completely clear the routing table. The ip address is ...
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routing table not initializing fully ; losing manually added routes

I installed Ubuntu 19.04 via wifi. After switching to an ethernet connection ( and removing the netplan config for the wifi ) the routing table does not add a default route to the gateway. ip r 10.0....
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Need to set default route to upstream DHCP interface on Ubuntu Server 18.04 LTS

I'm building an edge router using Ubuntu Server 18.04.03 LTS and need to configure the routing table to define the default route as being the upstream / WAN interface, which gets its IP address and (...
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Configure specific NIC for incoming local network

I currently have an Ubuntu 18.04.3 I have 2 NICs setup with, both NICs point to different router's. 1 is my normal network that is reachable through all my other devices and has access to the internet,...
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541 views

How to use netplan to create two separate routing tables?

I have an Ubuntu 18.04 host with two network interfaces on two subnets. I would like to set up symmetric routing so that traffic received from one interface is sent symmetrically out that same ...
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36 views

Raspberry with VPNC as Gateway für Smart TV

in my vacation house in Sweden I have fast Internet through fiber (local network 192.168.10.x) and want to connect my Samsung Smart TV via VPN to my FritzBox and thereby to my home network incl. NAS ...
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118 views

Ubuntu 16.04 static route with 2 interfaces and a bridge. Use one interface just for local traffic

I have a Ubuntu 16.04 install with 2 connected interfaces both with static IP's one in a bridge configuration. The networking service refuses to set the gateway on boot and I have to add it manually ...
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106 views

Ubuntu 18.04 with routing but need VM bridge

I have set up routing on my Ubuntu 18.04 desktop box. I have one dedicated ethernet port for my internal network that serves DHCP. I have my wireless NIC set up for internet access. Network works ...
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Ubuntu - Routing between different subnets

Topology I was looking at the other similar questions and could not find one that matches this one. I have an Ubuntu VM with 2 different subnets running on Hyper V. ETH0 - IP 10.10.1.2/24 - GW 10....
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Convert ip route add to netplan state

I am confused a bit about the following command (we had it in ubuntu 14 /etc/network/interfaces file) up ip route add local fc00::x:x:x/126 dev bond0 What does 'local' means here, and how do i ...
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Ubuntu 'blocks' one site

So this is something strange.. As a test, I installed a webserver on my workstation (using easyengine). I installed 1 website on the webserver I removed the website again, and installed in on the ...
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Workplace Routes scenario -> how to?

In my office, i have 2 networks. One intra and one for external access. Intranet is on ethernet and the external is on Wifi. The servers are in the ethernet network 172.30.x.x (255.255.252.0). The ...
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box pulls dhcp addr successfully, but cannot ping gateway or anything else on subnet

My wired ubuntu18.04 box pulls a dhcp address Ok, but cannot ping any machine on subnet. It can ping localhost|127.0.0.1|its own (dhcp) ip. # ping 10.0.0.1 From 10.0.0.195 icmp_seq=1 Destination ...
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4k views

UFW rules with NAT/masquerading

I am trying to use Ubuntu as a router of a kind by limiting a computer on my private network to what it can connect to on the internet. The Ubuntu box has two NICs, one is internet facing (enp0s3), ...
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169 views

how can I assign routing tables to interfaces which are configured via dhcp

My host has two interfaces with both are DHCP configured. I do need a default gateway for both interfaces and therefore routing tables with rules for each interface. So it would be good to get all ...
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146 views

How to route traffic to an IP to use wlan0 instead of tun0 in OpenVPN?

I'm running OpenVPN on Ubuntu 19.04. I have a VPN connection (OpenVPN) I need to keep up all day. However, there's an IP I want to route outside of the VPN tunnel. This IP should connect to wlan0 as ...
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Routing to another subnet and openvpn

I use Windows 10 at home and already setup OpenVPN as server On another location I have Ubuntu 18.04.2 Desktop computer and is used as OpenVPN client Home computer network (windows): Lan0 : 192.168....
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IPv6 default route NOT being set netplan Ubuntu 18.04.2 LTS

Am unable to configure the default route using netplan on an Ubuntu 18.04.2 system. The route works when explicit ip -6 route add ... commands are issued. Privacy extensions have been disabled: /etc/...
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Ubuntu as router: Network Layer packets not reaching WAN

I've got most of it working, but can't quite close the loop. I'm running Ubuntu 18.04.2 on my Raspberry Pi 3. I'm trying to use it as a wireless access point, but not as a bridge. I followed this ...
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186 views

L2TP VPN is Consuming Too Much of Remote Network's Upload Bandwidth

In Ubuntu 16.04, I used the following command so that Network Manager world provide L2TP as an option when adding a VPN connection: sudo add-apt-repository ppa:nm-l2tp/network-manager-l2tp; sudo apt ...
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Networking question ip routing

Let me start by saying I am a complete novice with very little networking knowledge. I have set up a VPN via a guide and everything is working fine, however, I would like for the IP routing or ...

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