Questions tagged [route]
Command line tool for manipulating and listing the routing table.
594
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What does default gateway from ipconfig on Windows means? [migrated]
What does Default gateway properties of every network adapter from ipconfig /all command's output means?
As far as I understand, default gateway is the next-hop IP that is assigned to address 0.0.0.0 ...
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Cannot reach LAN from Fedora 35 that is sharing Internet
In my cable ethernet configuration, a Fedora 35 workstation has 2 network interfaces:
if0 connected to an Internet router via DHCP
if1 connected to the LAN with a static IP
Machines in the LAN are ...
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1
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27
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Routing all Traffic through a VPN Node while accepting incoming WAN Connections
I want to route all traffic through another VPN-Node, while:
Keep the Connection to the VPN-Server active (already works)
Still accepting WAN-Connections on that Client.
My Client Node Configuration:...
- 321
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7
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SIOCDELRT: No such process when deleting default route from secondary interface on Ubuntu
I'm trying to remove the automatically-generated default route for a particular interface on an Ubuntu machine.
I have two interfaces, enp0s3 and enp0s8. Default routes are generated for each of them:
...
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63
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RTNETLINK answers: Invalid argument for specific IP Ranges
ip route add blackhole 64.79.89.0/19
ip route add blackhole 64.79.85.0/19
I try to add these ranges into route but they give
RTNETLINK answers: Invalid argument
I am not sure if it is about those ...
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2
answers
125
views
Add secondary IP to ESXi host from different subnets
I have to add a secondary IP to an ESXi host running ESXi 6.5. My objective is to allow communication between some machines running on a different local network and the VMs present inside ESXi through ...
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234
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Redirecting Netflix and Youtube traffic to another gateway by IP addresses on Mikrotik router
I help a friend in taking care of the network with few buildings with appartments for rent.
During the holiday season all apartments are fully booked, and that means we have 40-60 guests. There are 18 ...
- 123
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17
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Forward some connections on specific interfaces - ubuntu 20.04
i need to find a way to redirect the traffic on the interfaces depending on the url you need to connect to. I'll explain:
I have two network interfaces, one that must be used as default (like a normal ...
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109
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Docker Messing With IPTABLES?
I have a problem with docker
docker: Error response from daemon: driver failed programming external
connectivity on endpoint containername
(containerhash):
(iptables failed: iptables --wait -t filter ...
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36
views
Reach private subnets on secondary interfaces between GRE tunnel endpoints
I have two servers in different locations. Each server has an eth0 with a public IP (internet accessible) and an eth1 with a private IP connected to the internal network.
Server A
eth0: 1.2.3.4 (...
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Routing two debian virtual machines on one network
I have two debian virtual machines on two different physical servers with 2 interfaces on each virtual machines. One port of each vm is connected to each other on a network with CIDR of /21. and there ...
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55
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How to check an IP address is blocked by IP Route?
My server is constantly getting attacked by Amazon India servers.
I added 35.154.0.0/16 range to the route for IP address 35.154.252.15
ip route add blackhole 35.154.0.0/16
But when I check if the IP ...
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1
answer
32
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Isolating my docker container from the rest of my local network (route add reject not working)
I'm just simply trying to add a route to reject any traffic to other systems on my local network from my docker container, but seems like my route add command isn't working and I'm not quite sure why.
...
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59
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Unable to add IPV6 Route in GCP
we have a requirement where we need to create a floating Ip and it should be moved across the GCP Compute Instances. In this case we need to add the route under the route table of the VPC(asia-south1) ...
google-cloud-platform
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98
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ipv6 route add with next hop fails
I'm trying to add an ipv6 route on machine B to subnet behind next hop A:
2:2:2::2/64 +---+ 192:168:2::1/64 192:168:2::10/64 +---+
-----| A |---------------------------------------| B |
...
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73
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Route traffic after OpenVPN server
The main purpose - remote access to the local network (video surveillance, smart home).
Input data: mikrotik router and server in the DigitalOcean.
Since mikrotik knows how to work with OpenVPN server ...
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1
answer
59
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How to set a public LB route to a proxy on AWS?
I built this traffic route in a VPC.
Route53->ACM(SSL)->Public ALB->EC2(Nginx proxy)->Private ALB->ECS(Internal App)
The EC2's security group is allowing tcp 80 and 443. The ECS' ...
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1
answer
608
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What can cause 'Network is unreachable' when the link is up, the route is there, and the netmask is correct?
What could cause this?
$ sudo ip route show
192.168.100.0/24 dev usb0 ...
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1
answer
50
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Add to route table destnation using this syntax *.mycompany.net
The reason that I am asking this question is that i a using VPN-slice (VPNC) with openconnect
While running this command
ip route add *.mycompany.net via 0.0.0.0 dev tun0
Error: any valid prefix is ...
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answers
17
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Proper way to set congctl on systemd routes
I'm using sysctl to set default tcp_congestion_control to bbr on all routes and I'd like to set the congctl to dctcp on the route added by a private interface.
What is the proper way to do this? The ...
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77
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Dante socks server ROUTE command isn't working?
I've installed Dante-Server 1.4.2 on Ubuntu 20.04, and it runs without any issues, however, I've tried to redirect the traffic to squid proxy with the following small configuration:
errorlog: /log/...
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57
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How to configure Fedora 34 with three NICs and three subnets to route traffic?
I have a Fedora 34 linux and it has a physical ethernet interface (NIC3), a physical wifi interface (NIC2) and an USB/Ethernet interface (NIC1) (USB LTE Dongle).
I would like to use the NIC3 to route ...
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39
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How to switch between multiple ip addresses [duplicate]
As an example, I have 2 IP addresses on my NIC:
enp0s3: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 9000 qdisc mq state UP group default qlen 1000
link/ether 02:00:17:06:ac:05 brd ff:ff:ff:ff:ff:ff
...
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334
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Two instances of Dante proxy server with two interfaces
I'm running 2 instances of Dante server on my Linux machine, one of them is called danted which is supposed to connect me to the internet through the ethernet cable and the other is sockd which is ...
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95
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route two interfaces that has ip of two different subnet
Yes I know it's a duplicate of many questions but I can't find my solution to them.
I have a host virtual machine (ubuntu 16.04) that has two network adapters. one of them is connected to the gateway(...
0
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1
answer
48
views
Auditing specific route table operations
Does Linux have a way to audit operations run against a specific route table?
I have the following config in my custom route table:
default dev tun0 scope link
192.168.100.0/28 dev eth0 scope link
...
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3
answers
221
views
why MASQUERADE SNAT can block localhost connection?
I observed a weird behaviour on linux:
First, I clean all routes and iptables rules:
ip route flush table main
ip route flush table default
ip route flush table local
iptables -P INPUT ACCEPT
iptables ...
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0
answers
106
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IPv6 multipath routing with configurable weight
With Linux kernel 4.14, when I add IPv6 multipath routes with weights (10 & 30), they are getting added with same weight '1'. IPv4 route does not have this issue.
I checked with exact same steps ...
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130
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use ppp for Internet for netns
Use of
ip r add 0.0.0.0 via 172.20.10.10 src 10.0.100.10
GOT:
Error: Invalid prefsrc address
How to fix this?
Goal:
netns (host) => ppp0 => Internet via ppp0
My config:
/home# ip netns
ns2
ns1 (...
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69
views
Second interface not redirecting traffic
I am trying to setup a redirector to nat https traffic destined to (eth0)172.31.14.66 -> 1.1.1.1 and http traffic destined to (eth1)172.31.14.48 -> 2.2.2.2.
Here are my iptables rules:
iptables -...
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2
answers
618
views
OpenVPN server : connexion OK but no access to remote lan
I've got a running OpenVPN server with following configuration
VPN network is 10.7.0.0/16
LAN network is 192.168.100.0/24
Client is able to connect, but I can not reach LAN hosts located behind VPN ...
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1
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701
views
Debian Static route does not work (/etc/network/interfaces)
This is the content of /etc/network/interfaces:
auto lo
iface lo inet loopback
# The primary network interface
allow-hotplug ens18
iface ens18 inet static
address 10.0.5.108
netmask ...
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1
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27
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mikrotik route appear and removes every second automatically
Mikrotik OS v6.48.2 has routes
# DST-ADDRESS PREF-SRC GATEWAY DISTANCE
0 ADS 0.0.0.0/0 193.168.1.1 1 <<<<<<&...
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2
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241
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Multi hop routing
I'm trying to communicate from the tx.py program to send packets (UDP) down to device 1 and device 2 shown in the picture. Currently we have OpenVPN clients running on 2 of our VMs and if I run tx.py ...
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1
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39
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Routing loop issue
We have a application having certain ip, let say myapplication.com
The traceroute to the application give result something like below.
The Ip and the time is just for illustration purpose.
If you see ...
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1
answer
329
views
redirecting udp traffic from one network interface to another on the same host
My host has two network interfaces:
eth0:172.16.125.5
eth1:172.165.8.55
I want to redirect all UDP traffic to eth1 port 1234 to eth0 port 1234, ie:
172.165.8.55:1234 -> 172.16.125.5:1234
After ...
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2
votes
1
answer
86
views
Ping host with dual IPs on 1 IP, echo returns from other IP
I'm running Fedora 33 on a host (i5 cpu, 8Gb RAM, SSD and hdd) which is set up as a router; it has 5 NICs. I've managed to get dual internet gateways and dual LANs working reasonably well using ...
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1
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387
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Can (and do) I use iptables to expose a host directly online (not using NAT)?
I'm using a DSL-5300 VDSL modem/router which is set up with NAT for my house, and works great. Its web interface hasn't been written to support a mix of NAT and no-NAT traffic.
I've been assigned 8 ...
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1
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508
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Windows Route Add when Gateway is text instead of IP
I have the following in my route table if I connect to my Company VPN.
IPv4 Route Table
===========================================================================
Active Routes:
Network Destination ...
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1
answer
40
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Proxying packets back using iptables
Problem: requests from web-application server to main server should be proxied back to web-application server. So if I perform a request from web-application server to application's domain (or public ...
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1
answer
2k
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How do I provide Internet Access to both of my VLANS?
I have a TP-LINK T1600G-28TS, and I have 2 different VLANS (10.0.0.0/24 ID 101 and 10.1.1.0/24 ID 102), their IP addresses are defined by the switch's DHCP server. This part is working fine, I can see ...
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1
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523
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how to save static routes permanently in ubuntu
The current configuration:
server1:
sudo route add -host 10.0.1.2 dev enp131s0f0
sudo route add -host 10.0.1.3 dev enp131s0f1
server2:
sudo route add -host 10.0.1.1 dev enp131s0f0
sudo route ...
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82
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Openshift Route - Cookie specification - Istio Routing
I have requirement to pass cookie or headers in openshift route to istio virtual service and decide the traffic routing based on cookie or header passed from route to virtualservice.
Please share ...
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516
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Static route gives "Destination host unreachable" error
I have a server (Windows Server 2012) with 2 network interfaces.
One with a 172.0.0.0 network, which has the default gateway (172.16.8.254)
And one with a 10.0.0.0 network, no gateway set.
Since by ...
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54
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How to find the route that has internet connection and set it as default (lowest metric) with NetworkManager (Ubuntu)
~$ route
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
default 192.168.30.102 0.0.0.0 UG 100 0 0 eth0
default ...
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1
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522
views
How to only allow routing to IP range on particular interface?
I have two interfaces eth0 (192.168.10.x) and wlan0 (172.16.30.x) on my device (Raspberry Pi, Raspbian GNU/Linux 10 (buster)).
Both networks have access to the internet, but I want my device to only ...
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1
vote
1
answer
39
views
Routing traffic away from a VPN connection
I'm using a VPN which takes all my traffic by default. For some addresses, I'd like my computer to avoid using the VPN as it is slowing down the quality of the connection. The addresses for the ...
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1
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41
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Use a gateway from another NIC
I have a machine (machin-A (Ubuntu 18.04)) with two NIC's. one is eth0 and the other eth1. eth0 connected to the company subnet. eth1 connected to a second Linux machine (Machine-B) . both physical ...
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0
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199
views
How to make Linux kernel send ARP requests down multiple network interfaces with overlapping subnets?
I have a Linux PC with the following physical network interfaces:
Primary LAN/Ethernet port used for most traffic.
Ethernet (from external device) to USB (into my PC), used to connect to a single ...
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1
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39
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Can I forward VPN traffic to another vpn clients?
I've run OpenVPN server on SERVER-1.
Client1(10.8.0.2) and Client2(10.8.0.3) have a connected to OVPN SERVER-1 (pubIP:87.x.x.x | privIP:10.8.0.1)
And I've other SERVER-2 with connected 3 VPN clients ...
