Super User
Super User

Questions tagged [routing-table]

56 questions
7
votes
1 answer

Change order of routing table/move entry up or down in linux

I have a couple of interfaces in my routing table and the first one stopped working. I want to temporarily move it down to make one below it default. Do I have to delete and add it again or is there an ip/route/ifconfig command, which can just move…
Daniel Krajnik
  • 213
7
votes
1 answer

What does “scope” do in ip route and why it is necessary to setup static route in Linux?

If I want to replace default dhcp route rules with static ones, I have to add a rule ip route add scope link dev eth0. Or I will get an error: “Nexthop has a invalid gateway”. Here are my questions: Q1: What does “scope link” mean in ip…
William
  • 691
5
votes
3 answers

routing LAN connections among clients on same ISP router device

Trying to understand why I cannot reach other LAN devices on a ISP modem. WiFi is off. I'm using two of the 4 LAN ports on the back. I have one ISP modem at 192.168.1.1 (LAN), WAN is not relevant, as it is the public IP, let's say 1.2.3.4. Already…
gcb
  • 5,442
  • 13
  • 62
  • 86
4
votes
2 answers

How to understand the output of ip route on a mac

I asked this on networkengineering.stackexchange.com and was flagged as offtoppic but was told to ask here...so here goes: I am on a mac, when I run ip route show I get the following output: ip route show default via 192.168.178.1 dev en0 -- line…
Finlay Weber
  • 143
3
votes
1 answer

Routing table behaviour coupled with bound sockets - unexpected behaviour

Problem I am experiencing some rather odd behavior where a seemingly unrelated default gateway route is having unexpected side-effects. I managed to replicate this issue with a minimal example. The aim here is mostly educational and I stumbled upon…
kvnnap
  • 33
3
votes
2 answers

Multiple client connections using OpenVPN

I have 2 servers running OpenVPN, let's call them server A and server B, I also have a client for both of the OpenVPN servers which is called client1, I'm trying to connect client1 to both servers on another machine which in this case I will call…
Curean Nicușor
  • 31
2
votes
2 answers

tracert results not matching routing table (route print)

Why would tracert 10.0.0.1 produce the following results: Tracing route to 10.0.0.1 over a maximum of 30 hops 1 3 ms 3 ms 3 ms 192.168.0.1 2 * * * Request timed out. 3 * * * Request…
arcyqwerty
  • 1,080
2
votes
2 answers

How to route default traffic to another specific IP on a TP-Link router

I have a TP-Linkk router TD-W8960N 300Mbps Wireless N ADSL2+ Modem Router, which I use to connect to the internet via PPPoE. I have a backup internet connection with its own router, connected to the tp-link one through a LAN cable. tp-link…
Bertuz
  • 123
2
votes
1 answer

Unable to send ping from host A via B to C

There is a network of three computer. Problem: Host A (192.168.1.1) can send ping to host B (10.10.0.5, also 192.168.1.2), but can not to send C (10.10.0.6, 10.10.0.7). Host A say: "10.10.0.6 = Destinantion Host Unreachable." What I do wrong? …
stacker
  • 21
2
votes
1 answer

What does term metric mean?

In the ifconfig man page I encountered: metric N This parameter sets the interface metric. Searched the net, but didn't find clear explanation, only something like "it sets priority of the NIC interface". Is there definitive…
anon
2
votes
1 answer

I can ping from a PC to another PC on different subnet but the reverse is not

I had set up my LAN like this. I can ping from the laptop to PC, but I can't ping from PC to laptop. The result: PING 192.168.11.25 (192.168.11.25) 56(84) bytes of data. From 192.168.2.123 icmp_seq=1 Destination Host Unreachable I have the Routing…
Davuz
  • 827
  • 1
  • 8
  • 9
1
vote
1 answer

Creating a virtual network interface and; how would I route traffic for specific IP addresses to a virtual network interface (Ubuntu 22.04.5 LTS)

I have three IPs assigned to a single interface (modified results of netstat /rn): 2: eno1: mtu 1500 qdisc mq state UP group default qlen 1000 link/ether aa:aa:aa:aa:aa:aa brd ff:ff:ff:ff:ff:ff altname…
Shopgeek
  • 11
1
vote
1 answer

Change default route preference among connections

I have a Windows 10 machine which, for reasons, must be connected to a LAN and a WiFi simultaneously, most of the time, and only to one of them on occasion. Now, I would like the WiFi to be the default route, and the LAN to only be used for…
einpoklum
  • 10,666
1
vote
0 answers

[Mininet/Miniedit]: The hosts cant ping/reach other in a 2 router system

As a part of an experiment, my network has the following topology for two host machines connected to a router in mininet(on Ubuntu 22.04.02 Virtual Machine) h1 - r1 - r2 - h2 The host Machine 'h1' has the following…
Toshitt Ahuja
  • 11
  • 2
1
vote
0 answers

pfsense routing table: link vs interface

Here is my pfsense IPv4 outing table (netatst -r): Destination Gateway Flags Netif Expire default 192.168.4.1 UGS em0 127.0.0.1 link#4 UH lo0 192.168.1.0/24 link#2 …
cdjc
  • 131
1
2 3 4