Questions tagged [interface]
The interface tag has no usage guidance.
78
questions with no upvoted or accepted answers
5
votes
1
answer
1k
views
Can't communicate between multiple interfaces on same subnet
I have multiple ethernet interfaces on one machine, all on the same subnet. Normally these are set up to run on separate VM's, and I understand the limitations imposed by Linux as described here, but ...
- 151
4
votes
1
answer
3k
views
Traceroute time is too long
I m using RHEL 6.5 and eth0 interaface
Interface Ip is 100.x.x.x and when i traceroute to 100.x.x.x it showing one hop that too ip address of interface itself.
For eg traceroute to 100.65.111.14 ...
- 77
3
votes
0
answers
2k
views
Debian, IPv6 is not asssigned to interface
I have a Debian 7 Server with several networks and KVM VMs running configured:
2a01:4f8:191:439b::/64
144.72.132.208/29
The IPv6 Subnet is splitted into /96 Networks to assign each bridge a own ...
- 31
3
votes
3
answers
195
views
Can't consistently ping both networks of multihomed host
I have a host which is multihomed, eth0 is on 172.31.254.0/24 and eth0.10 is on 172.31.253.0/24 . Obviously eth0.10 is a subinterface on vlan id 10.
From this host I can succesfully ping hosts on ...
- 1,852
2
votes
1
answer
542
views
Unable to establish link between Mikrotik router and Mellanox NIC
I am trying to establish a 25 GbE link between Mikrotik CCR2004-1G-12S+2XS router and a server running Windows Server 2022 with Mellanox NIC (MCX512A-ADAT).
For cabling, I tried using the official ...
- 129
2
votes
0
answers
1k
views
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:...
- 21
2
votes
1
answer
243
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
2
votes
0
answers
723
views
Tap interface is not receiving packets
I'm configuring a tap interface and trying to send and receive packets through it, i configure it like this:
ip tuntap add name tap0 mode tap multi_queue
ip link set tap0 up
i'm using scapy to send ...
2
votes
1
answer
6k
views
configure trunk interface in linux centos7
I have connected 2 trunk interface to server(centos 7 server) nic port for setup vlan tagging.
And have enabled 8021q module in server.
Configure two physical interfaces as bonding as below
...
1
vote
0
answers
675
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#...
- 145
1
vote
0
answers
54
views
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 ...
1
vote
1
answer
2k
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-...
- 169
1
vote
0
answers
135
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
1
vote
0
answers
58
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-...
- 171
1
vote
0
answers
112
views
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
1
vote
0
answers
202
views
Setting up openVpn as an interface rather than routing all traffic from paid vpn
I have subscribed to a VPN provider that's provides openVpn config files.
Now instead of routing all traffic through this VPN, I would like to simply set it up as another interface where the ...
- 111
1
vote
0
answers
420
views
How to route between two interfaces?
I use a wireguard (a VPN) to connect to a server. This server has two interfaces (of interest for my problem - all the others are virtual ethernet links to connect to containers, no problem with these)...
- 3,657
1
vote
0
answers
527
views
Interface combinations implementation without firmware update wireless linux networking
I am working with the Qualcomm WiGig (60GHz) chipsets supported by the Linux networking wil6210 driver. I use Linux kernel 4.12.
In my use case, I would like to use concurrent usage of the WiGig ...
- 11
1
vote
0
answers
317
views
Maintain Internet Access after Bridge Creation
Simple Issue: I cannot ping the Internet after creating a bridge on a mesh node.
A Raspberry Pi mesh node, part of a batman-adv mesh network and set up as an access point with hostapd, cannot access ...
1
vote
0
answers
942
views
Safely restart network via ssh to set static ip
In my /etc/network/interfaces.d/eth0 I have set:
auto eth0
iface eth0 inet static
address 10.0.0.25
netmask 255.255.255.0
gateway 10.0.0.1
dns-nameservers 8.8.8.8 8.8.4.4
Which shall ...
- 328
1
vote
0
answers
103
views
How to use virtual interface as default interface
I've got a cloud SSD VPS @ OVH, and I'd like to change the default interface used for requests.
I have two interfaces: eth0 (which is the default interface) and eth0:0 (which is the new virtual ...
- 111
1
vote
1
answer
130
views
How do I set Ubuntu server to two static IP addresses and proper routing with two interfaces
I'm trying to set up the routing table on Ubuntu 12.04. The network environment is as follows:
server -----eth0 192.168.0.1 (DMZ)---LAN----10.13.x.x
Because the communication between 192.168.0.1 and ...
- 11
1
vote
0
answers
43
views
"Breadcrumbs" for series of hostnames?
Does anyone know of a shell that would show a series of breadcrumbs as I navigate into/out of various servers, like this:
Home > Build Machine > Vagrant > Docker-base
Hopefully it could ...
- 367
1
vote
1
answer
665
views
SSH timeouts between hosts which are connected via multiple routes
I've a nasty problem with ssh connections between hosts, which are connected via multiple ways (routes). To explain this in detail ...
As you can see, there are two possible ways between the hosts, ...
- 11
1
vote
0
answers
603
views
linux kernel configuration to filter multicast traffic based on interface
I have two virtual interfaces (eth0.2, eth0.3) in my PC. I am sending multicast data from eth0.2 to eth0.2. Multicast data is received in eth0.2 but also received in eth0.3, the other virtual ...
- 19
1
vote
0
answers
1k
views
How to execute a script only once, immediately after ALL network interfaces are up in OpenSUSE?
I run Opensuse 12.2.
I have 3 network interfaces, eth[012]
The interfaces are configured in /etc/sysconfig/network/ifcfg-eth[012]
I want to execute a script immediately after ALL three interfaces ...
- 11
0
votes
0
answers
45
views
Is there a web frontend for cifs/smb like Synology Filestation?
I´m looking for a Web-Frontend to browse, download and upload files exported from another Server via SMB.
It has to offer ldap/AD-login for Users and honor the permissions from the Share.
I know most ...
- 1
0
votes
1
answer
359
views
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
0
votes
0
answers
2k
views
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
0
votes
1
answer
156
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....
0
votes
0
answers
598
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
0
votes
0
answers
2k
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
0
answers
448
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 ...
0
votes
0
answers
2k
views
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 ...
0
votes
0
answers
746
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 ...
- 1
0
votes
0
answers
208
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 ...
- 96
0
votes
1
answer
1k
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
votes
0
answers
215
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 ...
- 89
0
votes
0
answers
288
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 ...
- 141
0
votes
1
answer
735
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
1
answer
2k
views
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
0
votes
1
answer
210
views
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
0
votes
0
answers
95
views
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 ...
- 113
0
votes
1
answer
398
views
Predictable network interface names doesn't work
I have a problem with moving into predictable network interfaces - if i rename eth01 into enp1s0 - can't login (interface doesn't starting up). I checked /etc/default/grub for net.ifnames=0 - not ...
- 793
0
votes
1
answer
2k
views
Creating network interface with no IP address on CentOS 7
I'm creating a Kubernetes cluster and using MetalLB (https://metallb.universe.tf/) as my load balancer. I've managed to configure everything to work for internal IP addressing but then wanted MetalLB ...
- 1,289
0
votes
1
answer
510
views
Can not create sub-interface in Cisco CGR 1240
I follow a tutorial, there shows the method of create sub-interface:
but in my actual situation, I can not do this:
Router(config)#interface gigabitEthernet 2/1.100
...
- 141
0
votes
1
answer
397
views
Can I change names of network interfaces arbitrary?
I have installed OpenWRT on VirtualBox.
There are four interfaces:
br-lan
eth0
eth1
lo
Why do they call that way? Are they variables? Can I name them arbitrary?
foo-bar
xyz0
xyz1
bo
Like so:
...
- 177
0
votes
1
answer
120
views
windows 10 ip route not working for modem usb 3G
i have 2 interfaces:
1 .- Cable ethernet
2 .- USB modem 3G,
The problem is i cannot work with both at same time, routing seems not to be working for me...
I cannot nake this work:
0.0.0.0 ...
0
votes
1
answer
477
views
Obsolete browser to access old switch and other apparatus
Sometimes I need to log in to old network apparatus web interfaces, that either have https with unsupported ciphers or need java plugin in the browser. With recent versions of Chrome, Firefox or IE ...
- 325
0
votes
0
answers
766
views
how to name SR-IOV Virtual Functions
When an SR-IOV Virtual Function (VF) is created, the Linux kernel names it ethX, with X being the lowest available index among Ethernet interfaces.
Is there a way to control such naming?
For ...
- 235