Try to start Eth0 device # ifup eth0 Device eth0 does not seem to be present, delaying initialisation. First you need to create a dummy network device that normal Linux tools can see. usb networking. VIZIO XWR100 on TechInfoDepot On the DD-WRT forums. The iwlist command displays information on Wi-Fi networks but does not bring up a network interface, so option A is incorrect. Thanks for the info I struggled forever with wierd behaviour after reboot with my NIC until I found this info. "Configuration Files". If you do not see NIC cars on Console, the slave is not able to communicate to the master. 1 netmask 255. It also does not require a forwarding gateway because this is the local network. If you're on a VLAN you'll need to edit the commands with "vif 10" like so: "interfaces. Device eth0 does not Linux eth0 not seem 克隆虚拟机网卡报错:device eth0 does not seem to be present eth0: Device not found eth0 eth0 eth0 To be read to be continued BE be BE To Be A Good Programmer Linux msgfmt does not seem to be installed windows android This does not seem to be a Debug" build. so the correct fix would be either 1) a. Fix lỗi không vào mạng khi clone centos với VMware Bringing up interface eth0: Device eth0 does not seem to be present, defining initialization [FAILED. I am new to fwbuilder. Example: Start and operate the virtual machine console from VMware vSphere Client. The NIC configuration can be performed from the command line with ifconfig (8) but will not persist after a reboot unless the configuration is also added to /etc/rc. Here we see interface eth0 not doing autonegotiation and set to a speed of 100 Mbps, full duplex. eth0 would not start. If the file exists, the first line of this file (excluding the newline) is used as the banner. 2 systems in either a Content Delivery System. Like it or not, this change in approach in interface naming is the future path for Linux. Upon reboot, firewalld does load. 1 is a virtual interface having eth0 as physical link, with VLAN ID 1. How to Fix "Device eth0 does not seem to be present" after cloning VMware CentOS guest These Ancient Relics Are So Advanced They Shouldn't Exist - Duration: 14:08. Instead, a different device entirely can be used. It is only applicable to simple setups, like one ethernet and one wifi interface. usb networking. Linux, check interface status In some cases you might want to check the status of your network interfaces from a script. It is this flexibility and extensibility in Oracle Clusterware that forms the basis of a high availability solution for Oracle Fusion Middleware. Hello, and thancks for the help. Thanks for the info I struggled forever with wierd behaviour after reboot with my NIC until I found this info. 04 LTS ) (All of these commands were done while in su mode. 148/16 brd 10. Using Iproute2, which has superceded ifconfig, the command: ip link set dev tapn address 52:54:00:12:34:56 will change the MAC address of the host-side interface to that given, which could be any legal MAC address that is unique within the local network. READ: Install Ubuntu 18. The latest EdgeOS firmware includes a built-in wizard to easily configure the EdgeRouter as a Layer 2 switch and includes a VLAN Aware option. No, they were not present. [SOLVED] virtualbox centos6 guest - Device eth0 does not seem to be present Post by aidanewen » Tue Aug 30, 2011 11:33 am I'm using virtualbox and trying to get my centos6 virtual machine onto the network. Hi All, Something is renaming my eth0 and wlan0 interfaces. This client provides a typed interface for managing different resource types. Your router broadcasts available addresses (shown during the setup) and the network interface uses one of those addresses. By default eth0 is the native ethernet connection of the RPI3. "eth0" is the only interface on the RH9 machine. unless they have changed it they took away the ability to reset the networking service in 14. If eth0 isn't there, whatever module the nic needs isn't loaded or hasn't grabbed it. In this eth0 will have an alias interface eth0:1. You do not usually need this command, because nmcli can handle polkit actions related to NetworkManager operations (when run with --ask). eth0 is added to br-eth0 Bridge. Interface Configuration Step 1: Ensure kernel support Before Ubuntu can configure your network cards into a NIC bond, you need to ensure that the correct kernel module bonding is present, and loaded at boot time. The problem I've experienced is that when you power on the new-UUID'd VM, you no longer have an ethernet adapter. This guide shows how you can set up a two node, high-availability HTTP cluster with heartbeat on CentOS. Missing eth0 Ethernet interface in Ubuntu — can't connect to router managed or not. i'm eager to turn it back. You want to bring up this interface. iface_type Interface type (16 bit number). [gentoo-laptop] Ethernet not > * Starting eth0 > * Bringing up eth0 > * dhcp > * network interface eth0 does not exist > * Please verify hardware or kernel module. TNS-12545: Connect failed because target host or object does not exist. The more portable way might work for you: $ sudo ifconfig eth0 down If you then can't ifup it, you likely have some configuration problem. Why does it want to start net. Device "link" does not exist. Did I miss something in my initial installation of Xen perhaps that causes this issue?. Q&A for Work. Here's the problem. I tried to change it by sudo vi /etc/network/interface but this file is blank. I get lo and wlan0, but no eth0. I don't think it can get much more explicit. 0 vlan-raw-device eth0. When you restart the machine wihtout a guest running, does eth0 then get a valid IPv4 address assigned?. Hi All, Something is renaming my eth0 and wlan0 interfaces. udev notices a "new" device and treats it as eth1. Permanent rules have been added using firewall-cmd --permanent. port-to-br port Prints the name of the bridge that contains port on standard output. Problem did not exist in 1773. Stack Exchange Network Stack Exchange network consists of 175 Q&A communities including Stack Overflow , the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. I have 2 ethernet cards on it. Resolution. eth0 (it doesn't even exist, and it is not shown by rc-update), and doesn't try net. "Interface eth0:1 does not exist" My firewall has virtual interface eth0:1. 110: icmp_seq=22 ttl=64 time=0. If it says that eth0 doesn't exist, it means that the interface can't be seen by the system. From the Configure Network Interfaces menu, configure the eth0 IP address. For more information, see The netadmin user. The order that both the interfaces and the IP addresses are listed is system dependent. In fact there are is no /dev/eth*. `dmesg` should show the same stuff as /var/log/messages (in this. Using Iproute2, which has superceded ifconfig, the command: ip link set dev tapn address 52:54:00:12:34:56 will change the MAC address of the host-side interface to that given, which could be any legal MAC address that is unique within the local network. it would indicate the card has not been configured. 3的linux一切OK,后来换了一台计算机,居然找不到网卡,显示“interface eth0 does not exist”,但是虚拟机的网卡都是一样的,怎么会出现这种情况呢?原来是网卡的不同在linux中有了不同的命名,所以被改成eth2了,用ifconfig eth2 up就好了,哈哈。. ) Any ideas why this is happening? or what I can do to fix it? Let me know if there is any other information that would be useful for troubleshooting. 6 (Re)starting paed paed uses obsolete (PF_INET,SOCK_PACKET) paed (re)started succesfully TFTP Upgrade Server v0. Note that wlan already works fine here if I bring it up manually with ifup. archlinux) submitted 6 years ago by Jaorizabal [ ] When I boot into the cd, I have wireless and internet. QEMU does not appear to provide an option to set this, but it can be set in the ifup script. Dear All, I am a total novice to HA and would like to implement it in active /stanby mode i have the following hardware 2. Solved: Hi I ran into some issues with a pair of 6880s booting. It failed to fetch the files. OLR integrity check passed Checking to make sure user "grid" is not in "root" group Node Name Status Comment ----- ----- ----- opendb02 passed does not exist. If an IP address on eth0 has not been configured, you must configure one by performing the following steps: Log in to the appliance as the netadmin user. bin to both switches (verified md5 of ios. 65" the first usable interface would be eth0. Re: Ethernet Driver problem? The Ethernet driver isn't board specific, so it should work fine with the AXI Ethernet core on the Spartan-6 LX9 microboard. RTNETLINK answers: File exists. If the netmask does not exist then we call the standard class netmask function to determine the standard class for the given ip address. heartbeat does not start when primary server comes back after restart. The ip utility does provide for interaction with ifconfig in that it allows addresses to be labeled where these labels take the form of ipconfig virtual interfaces. It is used to identify the local interface on which a multicast group is joined. My interface config is the following: allow-vmbr1 eth1 iface eth1 inet manual ovs_type. CHAPTER 1-1 Cisco TV CDS 3. Observe that NetBackup is actually providing both of the non-prohibited interfaces as shown by' SRC'. The file /etc/iproute2/rt_tables need not exist, as the iproute2 tools have a hard-coded entry for the main table. 4GHz) and VIZIO HD (5GHz). Learn more about Teams. rror fetching interface information: Device not found. 3] 複製したゲストOS (CentOS) がネットワークに繋がらない: Device eth0 does not seem to be present, delaying initialization が表示された際の対応. eth0 (it doesn't even exist, and it is not shown by rc-update), and doesn't try net. Do not connect the WAN interface yet. Then you need to resolve not pinging gateway. You cannot add this IPv6 address to any IPv6 range that you add through WHM's IPv6 Ranges interface (WHM >> Home >> IP Functions >> IPv6 Ranges). 0 goes to 66. Re: How can I prevent udevd from renaming eth0 to em1 In reply to this post by sirdeiu on machines without "biosdevname" installed thsese crap simply does not exist (or better: should not) and IF it exists this is a bug!. RTNETLINK answers: File exists. Clusterware Status. For example, interface eth0. To be able to use it effectively at such an occasion, however, you might want to learn how it works right now, so you’ll be prepared. Switched back to 1. This is not the response, but the finalization of the transmission. 65" the first usable interface would be eth0. I also have a additional NIC 10/100 on a PCI slot. Exit Installer From a quick search, it sounds like it has to do with the netbook using a new name for the ethernet interface, but I don't see anywhere in the BIOS where this can be changed. and working on a network connection while being connected over the same connection is finicky at best. Within the kickstart config itself you need to define the network interfaces using the network statement. The "monitor mode enabled on mon0" means that you must then capture on the "mon0" interface, not on the "wlan0" interface, to capture in monitor mode. no other interface is displayed while ifconfig -a. So, why not on your server? HPE is redefining the small business server by offering ClearOS with HPE ProLiant servers. So, when I do:. vodicka 15 comments This article is step-by-step tutorial how to fix a problem which occured after I restored my virtual machines from backup to my ESXI server. Dhairya Lakhera is a new contributor to this site. rc-update -s rc-status don't worry about hotplugging of usb yet. Do the interface need to be active or inactive at boot time. org should resolve to the IP address configured on one of the network interfaces not the loopback interface, and the IP address configured on said network interface should have a reverse DNS entry resulting in at least kolab. CHAPTER 1-1 Cisco TV CDS 3. For example: A system with two network interfaces populates eth4 and eth5, but eth0 - eth3 cannot be used. Power down the virtual machine and just apply a static MAC address to the interface using the original MAC, boot it back up and you should be on-line. eth0 eth1 e t h 0 NETWORK link-local IP ADDR 169. This is a template unit, which binds it to a particular interface, for example dhcpd4@eth0. When I use the ifconfig command, eth0 does not show up. See also the materials at: Dell's writeup and a blog post from an insider there. To that end, when a network receives a sub-interface as the parent that does not exist, the drivers create the VLAN tagged interfaces while creating the network. Before it was Eth0 DHCP and Eth1 internal. This should also work for command line IP address changes to Linux: edit the file /etc/network/interfaces. The guest VM does not have direct access to the network interfaces of your host PC, it has a virtual network adapter. Note that any NIC you plan to use in the bridge should not have a separate config. So, why not on your server? HPE is redefining the small business server by offering ClearOS with HPE ProLiant servers. Login Sign Up Sign Up. 1, that is. bin to both switches (verified md5 of ios. org, then kolab. Let's move your PC to a LAN served by the static IP. If it doesn't exist, copy paste this into the file and save the file and update it using the command, "sysctl -p" - 8. Since Hercules runs as a user process under the control of a driving system (usually Linux/x86 or Windows), it does not have direct access to the driving system's network adapter. 2 Installation, Upgrade, and Maintenance Guide OL-28321-01 1 Installing and Configuring the TV CDS 3. delete interface eth0 pppoe 0 vif 10 dhcpv6-pd delete interface eth0 pppoe 0 ipv6 delete interface eth1 ipv6 commit save Then set dhcpv6-pd up on your WAN interface (eth0 pppoe 0) NOTE: Please pay attention to the below - don't blindly copy and paste it. HI Dears, I am a new user in linux and I install redhat 4 into my machine. Instead, a different device entirely can be used. Running both hostapd and wpa_supplicant on an interface does not make any sense and only worked by accident in the past. If one does exist, its state is updated: If one does exist, its state is updated: $ nsot interfaces update --id foo-bar1:eth0 --addresses 10. If you do not disable this setting, you may experience problems with outgoing mail on IPv6. 4 ( if it does not exist please create it ) observe that network interface eth0 is being. The deny_interface string sequence determines which interfaces are not allowed to be used for communication. If you do not specify a network using the --network flag, and you do specify a network driver, your container is connected to the default bridge network by default. To Solve this : Delete networking interface rules file so that it can be regenerated and reboot your CentOS system. eth1 does not exist, then you may need to create it by making a symlink. I am using the Raspbian Wheezy (hard-float) image. 29-06:04+0000) started. Then, I looked at lshw -C network to find that my Ethernet interface was disabled. Note that wlan already works fine here if I bring it up manually with ifup. Exit Installer From a quick search, it sounds like it has to do with the netbook using a new name for the ethernet interface, but I don't see anywhere in the BIOS where this can be changed. These examples show you how to set a static local IP address and a dynamic external address. Back to Top. All I need to do is perform ifup eth0 and all is fixed, but that isn't feasible from ssh! I am starting in runlevel 3. Both these wired-only routers are made by Ubiquiti, cost under $100, and include an OpenVPN client that can be configured through the command line. "service network restart" produces the same failure. It does not require root / Administrator privileges. It re-broadcast mDNS packets from one interface to other interfaces. 927 1034 ERROR neutron. Hello, So per the title, I have an Arcadyan LH1000 on fw: 0. If your server has a public network interface called eth0, for example, you could allow HTTP traffic to it with this command: sudo ufw allow in on eth0 to any port 80. Also, you will lose network connectivity at this point. Problem did not exist in 1773. It is not a big issue when you follow the document in step by step process. I don't know when it started happening or if it was my piratebox install (which does not work, because wlan0 does not exist for the moment). What if we just have 2 servers, and we want to have highest web service availability possible with lowest cost?. I want to learn more about wireless things in Kali, but I can't found any wireless network connection around me since the wlan is not exist in my Kali. [SOLVED] virtualbox centos6 guest - Device eth0 does not seem to be present Post by aidanewen » Tue Aug 30, 2011 11:33 am I'm using virtualbox and trying to get my centos6 virtual machine onto the network. arp_ignore = 1 # Enable configuration of arp_announce option net. The changes will not take effect until the host reboots. Debian :: Network Do Not Take IP - IFConfig Eth0 Mar 3, 2011. tunnelbroker. interfaces that the loopback driver supports. Do not connect from outside, such as by using remote desktop, because doing so affects the network settings. I have Fedora running as a server. I am using the Raspbian Wheezy (hard-float) image. I really dig Gentoo. To select the multicast output interface, use --miface instead, e. If the netmask does not exist then we call the standard class netmask function to determine the standard class for the given ip address. If it doesn't exist, copy paste this into the file and save the file and update it using the command, "sysctl -p" - 8. 255 dip 4 172. It has not been thoroughly tested. This can be a simple list of numbers. During this time, let's go back to the previous test server and check the continuous ping to our bonding server. Hi All, Something is renaming my eth0 and wlan0 interfaces. The default SSIDs for the device are VIZIO (2. This laptop has the broadcom card that requires the B43 driver which I've put on a couple machines running Ubuntu. rules" here. txt does not exist. However, when I try to boot it on a different pi, everything appears fine, but eth0 doesn't show up in ifconfig. I tried to change it by sudo vi /etc/network/interface but this file is blank. bootloader --location=mbr --append. But Ubuntu, and many other Linux. I have cloned my raspberry pi SD card after customising the OS. Cobbler with CentOS 7 failure to boot/kickstart. So, when I do:. The order that both the interfaces and the IP addresses are listed is system dependent. I am using the Raspbian Wheezy (hard-float) image. If no non-private network interfaces exist on the appliance, the appliance does not complete startup, and only the command-line interface is available. Power on the virtual machine if its not already, make a backup of the following file. The netstat command gives you a set of tools to answer the question “What in blazes is going on on my network?” when things go wrong. If it says that eth0 doesn't exist, it means that the interface can't be seen by the system. nmcli c a ifname eth0 type ethernet ipv4. ip link ls eth0 responds with "Device eth0 does not exist". This section provides examples on how to fix network-interfaces if they do not work anymore (or before they stop working before the new udev package has been switched to). This is a practical guide with concise explanations, however the reader is supposed to know what s/he is doing. Do not connect the WAN interface yet. eth0 connects and I am online when I'm plugged in. method disabled ipv6. – alexus Aug 10 '11 at 19:25 I appreciate you adding screen shots but i'm saying when I run system-config-network and I click "Device configuration" I get nothing in there, so nothing to be added. If your server has a public network interface called eth0, for example, you could allow HTTP traffic to it with this command: sudo ufw allow in on eth0 to any port 80. During the installation it asks me to modify the Network Configuration. This program is going to create it, including needed parent directories. The file /etc/iproute2/rt_tables need not exist, as the iproute2 tools have a hard-coded entry for the local table. Containers connected to the default bridge network can communicate, but only by IP address, unless they are linked using the legacy --link flag. I've done most of it successfully but having a little problem with step 4 which states 'In the Terminal command line type 'ifconfig eth0'. [SOLVED] device eth0 doe not exist After using Ubuntu for 7 years tried to install Arch following the beginner wiki. 2 (64-bit) and then the 3. If you need to use an IPv6 address then you will need to configure the interface in the text based configuration file for that interface. This is the default networking backend and generally is the easiest to use. figure out the ethernet issue. I have also verified firewalld is enabled on boot. "device eth0 does not exist Virtualbox" Solution: When you install others VMs the change in the MAC address forces a Linux feature which sets up the new eth1 instead of eth0. Instead, a different device entirely can be used. > eth0 does not exist as well as device eth1 does not exits, but there > are symlinks in /etc/init. I tried to change it by sudo vi /etc/network/interface but this file is blank. The owner believes it was working, at least for a while, but it isn't now. This integer MUST be incremented and mDNS TXT record updated whenever a change is made to the corresponding HTTP API resource on the Node. After the reboot the MSE was no longer visible on the network. I have Fedora running as a server. This document is a collection of Unix/Linux/BSD commands and tasks which are useful for IT work or for advanced users. Problem did not exist in 1773. but when i saw the result of command, i got "Device "eth0" does not exist. The deny_interface string sequence determines which interfaces are not allowed to be used for communication. interface eth3 does not exist! device eth1 entered promiscuous mode device eth0 entered promiscuous mode can't find port eth3 in bridge br0 Jan 1 00:00:02 ucd-snmp[65]: UCD-SNMP version 4. This page describes how to set up TCP/IP connectivity between a Hercules machine and the outside world. Keepalived_vrrp[33045]: Default interface eth0 does not exist and no interface specified. no other interface is displayed while ifconfig -a. If NICs are renamed with the NICs that do not exist, then after update command , do :. archlinux) submitted 6 years ago by Jaorizabal [ ] When I boot into the cd, I have wireless and internet. I thought maybe the eth0 issue was bad hardware so to e sure I used a Linux live cd and had no problems getting internet connectivity so I know its not the mobo. I am new to fwbuilder. when I tried what you describ here, I found eth0 only and when I used ifconfig comand, there is a message the command is not exist. Reverse Engineering the Enphase Installer Toolkit Enphase Envoy-S Open Ports!. 255 dip 4 172. ifup eth0 reports interface is not available I have purchased a new desktop Core 2 Deo 41Y Mother board, 2Gb ram, 500 Gb HDD which has a inbuilt NIC card. The main routing table is the table operated upon by route and, when not otherwise specified, by ip route. When I try 'ifup eth0', I get: ERROR: interface eth0 does not exist. "Configuration Files". "Configuration Files". This integer MUST be incremented and mDNS TXT record updated whenever a change is made to the corresponding HTTP API resource on the Node. First determine whether your applications are exhibiting any problems. You do not have to enter an IP address for the network interface (eth0). eth0 is present but does not have an IP address. so that replacing a broken network card does not change the name. It’s possible to include extra data to personalise the message using text to speech. [root@stby1 bin]#. /crsctl check crs CRS-4638: Oracle High Availability Services is online CRS-4535: Cannot communicate with Cluster Ready Services. So after next reboot we may get different interface names. The layer2+3 value was added for bonding version 3. With --if-exists, attempting to delete the port for an interface that does not exist has no effect. eth0 is the only interface I have there with lo. During this time, let's go back to the previous test server and check the continuous ping to our bonding server. This can be a simple list of numbers. dhcp - The dhcp protocol should be used. 04 is that when you configure new IP Address on a Network interface, it does not remove the old IP Address from the interface after network restart. I checked boot log and for eth0 it shows "Bringing up interface eth0: Device eth0 does not seem to be present, delaying initialization" ↳ CentOS 4 - X86_64,s390. 0 is Linux based application. # ifup eth0 Device eth0 does not seem to be present, delaying initialization Fix. I went into /etc/xen/scripts and manually ran the network-bridge status script. The ip utility does provide for interaction with ifconfig in that it allows addresses to be labeled where these labels take the form of ipconfig virtual interfaces. 0 post-up iptables -A FORWARD -i lxcbr0 -s 192. 110: icmp_seq=22 ttl=64 time=0. Power on the virtual machine if its not already, make a backup of the following file. For more information, see The netadmin user. 2 Software This chapter covers the installation of the new Rele ase 3. # ifup eth0 Device eth0 does not seem to be present, delaying initialization Fix. To Solve this : Delete networking interface rules file so that it can be regenerated and reboot your CentOS system. 1/24 -j ACCEPT post-up iptables -A POSTROUTING -t nat -s 192. See also the materials at: Dell's writeup and a blog post from an insider there. When I add a new domain with a dedicated IP, on the creation log it says "parent interface eth0 does not exist!", and the new IP is not configured, I have to go to network configuration and add it manually as a virtual interface inside eth0. "service network restart" produces the same failure. I've got an Asus RT-AC68U in my network. – alexus Aug 10 '11 at 19:25 I appreciate you adding screen shots but i'm saying when I run system-config-network and I click "Device configuration" I get nothing in there, so nothing to be added. log: Link veth0 is missing. pid does not exist ipwatchd[1350]: IPwatchD started ipwatchd[1350]: Entering pcap loop ipwatchd[1350]: Received signal 15 ipwatchd[1350]: IPwatchD stopped. You will notice, that now the ETH0 interface does not exist in bonding status anymore. Worth two network cards and Ian wan. Code Definition; 8001: Configured Action is not supported. Everything seems to work during installation, even network wired connection, since was able to follow the steps for installing packages with pacman. The XenConsole information is pulled from the master. I have cloned my raspberry pi SD card after customising the OS. /24 via 192. This section provides examples on how to fix network-interfaces if they do not work anymore (or before they stop working before the new udev package has been switched to). Do "lspci | grep -i eth". it would indicate the card has not been configured. After the reboot the MSE was no longer visible on the network. `dmesg` should show the same stuff as /var/log/messages (in this. This form submits information to the Support website maintenance team. 10 fix-port Next we will build the elements we will need to build the policy from Trust to EXTRANET Build address objects for Server1, Server2 and create a new group titled DATA-CENTER-SERVERS-GRP and add the Servers to the group. port-to-br port Prints the name of the bridge that contains port on standard output. The file stuff. ) Any ideas why this is happening? or what I can do to fix it? Let me know if there is any other information that would be useful for troubleshooting. Be sure to make a backup before you change the settings of the virtual environment from which you are migrating so that you can restore it. Power on the virtual machine if its not already, make a backup of the following file. Forum » Discussions / Bugs » 5GHz wifi on Shibby AIO (102) is not working. However, you may find the command useful when you want to run a simple text based polkit agent and you do not have an agent of a desktop environment. Traffic shaping uses concepts of traffic classification, policy rules, queue disciplines and quality of service (QoS). For example: A system with two network interfaces populates eth4 and eth5, but eth0 - eth3 cannot be used. an active interface and a gateway to. From the Configure Network Interfaces menu, configure the eth0 IP address. RTNETLINK answers: File exists. The file stuff. CentOS configures the network interface correctly via DHCP, but sets the parameter ONBOOT=no if you do not activate the Connect Automatically option under Configure Network (for the eth0 interface) during the installation. This may not work for all Linux distros but it should be accurate for most. rules" here. For me it didn’t work until I put it at the end of the the inet eth0 section, as I’m using eth0 and eth1 is not used. This machine was built a month ago running something like. In the following example, we are adding both eth0 and eth1 to the bridge "dev". Then we check on the peer address and determine if it is a single valued ip address. On bootup the interface won't work! What I did to fix this was to disable dhcpcd for both interfaces: systemctl disable dhcpcd@ens3. it also happens with wlan0. Thanks for the info I struggled forever with wierd behaviour after reboot with my NIC until I found this info. Whenever I reboot a CentOS Hyper-V VM, eth0 does not start automatically. I tried to change it by sudo vi /etc/network/interface but this file is blank.