Questions tagged [interface]
The interface tag has no usage guidance.
331
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How to delete utun0 in my macos?
ifconfig:
utun0: flags=8050<POINTOPOINT,RUNNING,MULTICAST> mtu 1380
inet6 fe80::a3d5:45cd:d66b:6bd5%utun0 prefixlen 64 scopeid 0x12
nd6 options=201<PERFORMNUD,DAD>
route:
fe80::a3d5:45cd:...
- 1
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0
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115
views
Configure Secondary Interface on EC2 using Ubuntu 22.04
I have launched a EC2 instance having OS Ubuntu 22.04 which has a primary interface ens5
I have attached a secondary Interface ens6.
This is the output of ifconfig -a
root@ip-172-31-7-213:/home/ubuntu#...
- 125
0
votes
1
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141
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iproute2 and netplan configuration
I want to use 2 network interfaces, each one has its own default gateway, at the same time. I found on google that iproute2 program could solve my problem but I also have to config netplan in order to ...
- 11
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35
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Is It Possible to configure shaping on Nexus 3064 wtih NX-OS v.6
Is there any can give a solution about how Nexus 3064 could be configured QoS or shaping on their interface?
I'd trying use some policy-map but still doesn't working.
0
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2
answers
329
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Predictable network interface names not showing up
I seem to have the opposite problem of the internet. When you search for predictable network names not working all you find for the love of god is how to go back to wlan0, eth0 etc and disable it.
I ...
- 3
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0
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100
views
Multiple IPv6 tokens on one interface
For a while, Linux has had support for IP tokens, meaning, you could do the following ...
ip token set ::10 dev eth0
and no matter what IPv6 prefixes the machine receives, it will always use ::10 for ...
- 164
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1
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92
views
what is the meaning of inteface speed -1?
I have a physical server with 6 interfaces: eno1, eno2, eno3, eno4, eno49, and eno50.
The eno49 and eno50 are up and when I check their capacity for example with ethtool eno49 or from cat /sys/class/...
0
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1
answer
63
views
Best practice for preferring the network interface that actually has internet?
I have an embedded device where I have three network connections, eth0, wwan0, and wlan0. wwan0 is a metered connection, so I would generally prefer eth0 or wlan0. The problem is that at any given ...
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0
answers
1k
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how to configure a network interface on ubuntu server 22.04 lts?
I would like to configure the ethernet network interface of a server but I am completely lost. I saw on the internet that you could do it with the nmcli tool but also with netplan, I saw some people ...
- 1
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118
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Create network namespace for tun0 and assign application
I'm new to linux and have set up my own Lubuntu 20.04 box. So far I've disabled IPV6, setup firewall rules, configured groups, users and sudoers file, mounted network shares and installed ssh, xrdp, ...
- 113
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18
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bug in quiting by signals from pkt-gen using ixgbe driver of netmap
I used ixgbe 5.15.2 for netmap ext-driver. when I run:
numactl -C 0-3 pkt-gen -f rx -c 4 -p 4 -i eth8
(eth8 is ixgbe interface)
in dmesg there is a message, that says:
[500932.091311] watchdog: BUG: ...
2
votes
2
answers
474
views
qemu commandline can't see /dev/net/tun
i am newbie with qemu and libvirt. I hit the issue with virsh and qemu, especially with tun interface setup.
Once i run
qemu-system-x86_64 \
-nographic -enable-kvm \
-cpu host -m 2048 \
-...
- 23
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1
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86
views
How to ping backup interface?
this is my network configuration:
bond interface 192.168.101.50/24 has two salaves: eth1 (192.168.101.1) that is connected to 192.168.101.2 and eth2 (192.168.101.10) that is connected to 192.168.101....
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answers
408
views
Routing table for 2 interfaces
I have the following interfaces
eth0 192.168.1.178 subnet mask 255.255.255.0 default gateway 192.168.1.1
eth1 10.4.0.6 subnet mask 255.255.255.252 default gateway 10.4.0.5
I want eth1 only can ...
- 1
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1
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904
views
I am creating a tun interface with sudo ip tuntap add dev <interface_name> mod tun, but it's not receiving packets when I ping it?
Here are my command when I set up the interface:
sudo ip tuntap add dev router0 mod tun
sudo ip addr add 10.0.0.138/24 dev router0
sudo ip link set dev router0 up
Here is the output of ip addr show ...
0
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0
answers
1k
views
Server network interface not working properly
I recently bought a ZT Openrack server from eBay (the seller mentioned it was a OCP server) planning to use it as a simple file server, and it arrived a few weeks ago. However, it appeared to not ...
0
votes
1
answer
207
views
Redirect specific traffic through a VPN interface
I,
I would like to redirect specific ports through a specific interface.
Until now what I accomplished it was
cat /etc/iproute2/rt_tables | grep "200 force.route" > /dev/null
if [ $? != ...
0
votes
0
answers
280
views
Adding IPv6 interface into ifconfig worked but host unreachable when use it
I have VPS run on Ubuntu 20.04, I was asking to Customer Service of my VPS Provider, she said their service (VPS) currently is not supporting IPv6. Since she is not technical support, I believe my VPS ...
1
vote
1
answer
123
views
Ansible populating a variable based on a json param with a json param
I have a variable containing json:
{
"ansible_facts": {
"ansible_network_resources": {
"interfaces": [
{
"...
- 91
0
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0
answers
1k
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Configuration of enp0s3, enp0s8 interfaces on Centos
I'm looking forward for assistance to configure interface enp0s3 which shall be used for client connection.
As well as enp0s8 interface which one is dedicated for administration purposes.
Currently ...
1
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0
answers
43
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Unable to make two docker containers communicate
I am trying to make two containers communicates on a server like it is working on my machine.
The thing is that they are not able to communicate (trying to ping container B from container A)
I first ...
0
votes
0
answers
555
views
Docker macvlan with second interface
I currently have two NICs ens192 10.0.0.0/24 and ens224 10.10.0.0/24. Currently docker is using ens192. I have a few containers that I would like to use ens224 so their traffic would be routed through ...
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1
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1
answer
2k
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Interface following a link
A machine with debian 10. It has 3 interfaces with different ip. One of them is needed in rare cases, it has a static route to the management network (the rest of the routing works via ospf through ...
- 23
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0
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160
views
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 ...
- 56
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1
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442
views
Debian 10, cant use 2 Network Interfaces at the same time
Problem and explanation:
What I want to do: Setting up the interfaces, so all can be used at the same time.
Problem: I got 3 Interfaces in total. 1 is the LAN Connection and 2 are LTE Connections ...
- 1
0
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0
answers
185
views
One interface take all the IP addresses and the other one use none
I built my first custom kernel and have a few problem with it (see this other post).
I configured with /etc/network/interfaces one ip address on each physical interface of the computer. The commande ...
- 69
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1
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827
views
How should i debug a Microsoft CIM that fails because MSFT_NetRoute be "not found"?
In general, how should one debug a failure related to CmdletizationQuery_NotFound messages, and why would the MSFT_NetRoute based queries register such an error?
Details
Specifically, my Kubernetes ...
- 211
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1
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3k
views
How to run DHCPcd on interface eth1 only [closed]
I have several network interfaces - eth0, eth1.
ETH0 is connected to the isolated local network (with switch) and has 2 static IP addresses. It was configured using /etc/network/interfaces file and ...
- 103
1
vote
1
answer
2k
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libreswan configure virtual interface for ipsec traffic
Description:
I am learning how to configure ipsec with libreswan.
I want to set up a host-to-host vpn between two hosts. I want each host to use a virtual interface for their ipsec tunnel.
Problem:
I ...
- 209
-2
votes
1
answer
73
views
Can we have multiple IP addresses with different Net IDs on an interface? [closed]
Can we have multiple IP addresses with different Net IDs on an interface? Like a Network Card? For example setting up 192.168.1.2 and 18.170.2.5 on the same network card. If yes, where do we use this ...
- 1
0
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0
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215
views
Add IPV6 range / block on network debian configuration
I am configuring a network interface on my server, editing this file /etc/network/interfaces.d/50-cloud-init.cfg
I need to have a list of IP address configured which all are in the same ip-block.
For ...
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2
votes
1
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199
views
Windows disable NIC as if it were unplugged
I have noticed a distinct difference in Windows (10) between administratively disabling a network interface, and physically unplugging the connection. I am not exactly sure how to describe the ...
- 185
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1
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184
views
Using netns to force Java application use specify IP
My VPS provider assigned 4 IPv4 to my vps. However, This assigned to single NIC, and VLAN not working(Maybe it is my configuration problem). If I try using VLAN, I can't get external network using ...
- 113
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1
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490
views
GUI Interface for ACL (Cisco)
Are there any interface (GUI) software to manage ACL? Using Cisco ACL, but it's hard to manage with command line. Any ideas?
Basically, need a software tool to manage ACL permissions with GUI instead ...
0
votes
2
answers
414
views
network interface packets count vs bytes [closed]
I am looking at RX and TX stats taken from my ADSL modem/router (DLink DSL-2750B).
I can't figure out how to make sense of the RX/TX packets vs RX/TX bytes.
br0 Link encap:Ethernet HWaddr ...
- 23
1
vote
1
answer
1k
views
Zabbix server and client with 2 IP-addresses
Zabbix server-5, Debian 10.4. Data from remote hosts are collected via Zabbix Proxy ( zbp1 ). Scheme of connection is on image below.
Remote host connects via his ISP #1 to main office using VPN-...
- 69
1
vote
0
answers
98
views
Handle 2 routes to the same destination simultaneously
I setup on my machine 2 different routes on 2 different interfaces to reach a single destination.
When I ping a machine on that destination network, the packet go through the route with the highest ...
- 111
0
votes
1
answer
736
views
Can't configure a network interface by entries in different files inside /etc/network/interfaces.d
I want to configure a vlan interface by using a file in /etc/network/interfaces.d/, e.g.
vlan1cfg:
auto vlan1
iface vlan1 inet static
address <some addr>
netmask <some mask>
...
- 1
0
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1
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236
views
what does the network parameter mean or do in /etc/network/interfaces
I've seen following configuration that gives me a bit of a headache
iface ens192 inet static
address 10.27.202.21
netmask 255.255.255.0
network 10.2.0.0
broadcast 10.27.0.255
...
- 3
1
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1
answer
2k
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linux ens4 network interface stop and start [closed]
When i use ifconfig ens4 down and ifconfig ens4 up in the google vm the connection does not return and remains down
sudo -s
apt install screen
screen -s test sh start.sh
ctrl + a + d
echo "1&...
-2
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1
answer
185
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Virtual network interface in Windows
i am trying to setup a VPN server tunnel on my windows PC so that i can connect to it using remote client VPN hence routing traffic through that tunnel
client = android
1
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2
answers
1k
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Multiple interfaces on one NIC
I managed to install Debian on my Banana Pi R2.
This device has two physical NICs: one for WAN (1 port), one for LAN (4 ports).
eth0
eth1
if I run ip address, I can see, that there are multiple ...
- 161
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0
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36
views
"tunX" interface device sequence is incrementing with every "ssh" connection
We use ssh -w connection to create tunnels from client workstations to the server. -w creates a tunnel interface for that particular ssh connection. On the server side I noticed every time ssh re-...
- 151
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1
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1k
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Windows Firewall - Block all incoming traffic on Interface 1
I have a Windows Server (2019) with two interfaces. The first Interface is for Internet access only and the second for management only. Now I want to block all incoming connections on the first ...
user200271
-1
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1
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130
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iLO Interface connections of storage device in the server rack [closed]
I have a setup of 3 racks. In each there are 2 storage server (HP DL560 GEN8) and 4 compute server (HP DL360 GEN8) and 2 control planes (HP DL360 GEN8) and on top of the rack 2 patch panels. Above all ...
- 11
1
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1
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408
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Configuration to use choose the hardware interface for the request?
I have a linux machine (Debian 10 based OS), with 3 hardware interfaces connected to the internet, 2 being USB modems: ifconfig gives ->
eth0: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
...
- 23
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1
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193
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NAT happens before routing
I am currently building a private cloud cluster using Proxmox. My cluster contains a head node and two compute nodes.
My head node hosts a NAT server and openvpn server, and three NICs: one for ...
- 1
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0
answers
67
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Use local interface address for firewall rule
I'm setting up a firewall for a connected device running Linux. It has a wired/wireless interface to connect to the internet in general and to open a VPN tunnel to an external server. For security ...
- 111
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0
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103
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How can I put a WiFi client and an Ethernet client to the same group?
I have wireless interface wl0 and ethernet interfaces eth0, eth1, eth2, eth3 all in the same bridge br0. Now I have to put one of the wifi clients and one ethernet client to the same group so that ...
- 111
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2
answers
91
views
Is there a way to alias a specific interface ip?
I've got a VCS running on debian as prod server, and due to some hypervisor issues it had to be rebooted/migrated/updated several times in the past week.
Because i'm running my app using docker ...
- 103