Questions tagged [interface]
The interface tag has no summary.
339 questions
1 vote
1 answer
25 views
Network Link to a Host is down after some time in same vlan
A physical host is connected to our Aruba switch at interface 1/49 via a 10GB SFP (third-party module). After some time, the host becomes unreachable. The physical host is running Rocky Linux 9.6, and ...
0 votes
1 answer
136 views
NAT is not working properly
I'm encountering an issue where my host-level iptables NAT rule (for VMs on a private bridge to access the internet) stops working when I enable the Proxmox VE firewall on the VM's network interface. ...
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1 vote
0 answers
201 views
Can not configure second SFP port on Juniper EX2300
I have trouble using an additional SFP on a EX2300-24T switch. Currently I am using several 1G copper ports and xe-0/1/3 as uplink which is working fine. However, trying to configure another SFP ...
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1 vote
0 answers
76 views
Planet switch settings reverting
Introduction I have two Planet sgs-5240-48t4x switches and they are connected via 1000BASE SFP singlemode fiber connection. The link doesn't work when both sides have the autonegotiation enabled. For ...
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0 answers
45 views
Looses default gateway when applying quickack config on same subnet
For below interface: iface lo inet loopback # Network interface for LAN allow-hotplug eth0 iface eth0 inet static address 10.53.81.248 netmask 255.255.254.0 # Network interface for ...
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1 vote
0 answers
3k views
Ubuntu 24.04 How to remove a network interface (Netplan, Cloud init)
I have an interface I want to get rid of. The machine was a basic Ubuntu 24.04 install. I configured the static IP on eth0 as presented by the installer. I saw no way in the installer to remove the ...
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0 votes
1 answer
1k views
AWS VPC Interface Endpoint Security Group Best Practice
I am creating a VPC Interface Endpoint to a couple of aws services (logs and ecr) to keep traffic internal to aws for both cost saving and security reasons. I am wondering what the best practice is ...
0 votes
1 answer
105 views
UDEV don't name correctly network interfaces without rebooting
I'm trying to use the predictable system for interface naming with the (4) scheme. My problem is that when I plug an USB Ethernet it always pick a name in ethX instead of enx{MAC} and I have to reboot ...
-1 votes
2 answers
1k views
hetzner ubuntu dns resolution not working
I created a natgateway using opnsense I created a VM in a private network which is behind the natgateway so that all internet traffic will pass through opensense into the client VM I can ping google ...
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97 views
Change interface/IP service binds to
I have a few Node.JS and TypeScript application. Some uses SNMP and other internal services. None of them have any specific bind/sourceAddresssettings. I see services binding to the wrong interface ...
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0 votes
0 answers
134 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 ...
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2 votes
1 answer
1k 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
3 votes
1 answer
3k 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:...
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1 vote
0 answers
870 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#...
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0 votes
1 answer
726 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 ...
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2 votes
2 answers
2k views
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 ...
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0 votes
1 answer
757 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 votes
1 answer
218 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
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 ...
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2 votes
2 answers
2k 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 \ -...
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0 votes
1 answer
194 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
653 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 ...
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0 votes
1 answer
4k 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 ...
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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
1 answer
284 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
658 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
245 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": [ { "...
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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 ...
1 vote
0 answers
66 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 ...
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0 answers
831 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 vote
1 answer
5k views
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 ...
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0 votes
0 answers
254 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 ...
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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 ...
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0 answers
265 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 ...
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1 vote
1 answer
2k 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 ...
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0 votes
1 answer
6k 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
2 votes
1 answer
4k views
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 ...
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-2 votes
1 answer
158 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 ...
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0 votes
0 answers
382 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 answer
489 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 ...
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0 votes
1 answer
357 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 ...
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0 votes
1 answer
1k 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
918 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 ...
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1 vote
1 answer
3k 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-...
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1 vote
0 answers
198 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 ...
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0 votes
1 answer
1k 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> ...
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0 votes
1 answer
492 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 ...
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1 vote
1 answer
3k views
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 votes
1 answer
334 views
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 vote
2 answers
2k views
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 ...
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