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I have configured CentOS VM, with NetworkManager disabled.

Question:

When I start VM I have access to the internet, but after a while I lose it. How can I fix that?

  • If additional info is needed, please, feel free to tell me, I'll do my best to get it and add to topic. – Denis Sablukov Mar 25 at 12:06
  • Hey Denis, can you try to run traceroute to see where it's failing ! – Vivek Kanadiya Mar 25 at 13:00
  • What version of CentOS are you using? – fpmurphy Mar 26 at 2:36
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in step one, you say:

When I start VM I have access to the internet, but after a while I lose it:

test this on console:

dhclient -v

You will notice it will bound IP address as shown below

[root@localhost network-scripts]# dhclient -v
Internet Systems Consortium DHCP Client 4.2.5 Copyright 2004-2013
Internet Systems Consortium. All rights reserved. For info, please visit https://www.isc.org/software/dhcp/ Listening on LPF/ens32/00:0c:29:68:22:e2
Sending on   LPF/ens32/00:0c:29:68:22:e2
Sending on   Socket/fallback DHCPDISCOVER on ens32 to 255.255.255.255 port 67 interval 4 (xid=0x433a9e33) DHCPREQUEST on ens32 to 255.255.255.255 port 67 (xid=0x433a9e33)
DHCPOFFER from 172.16.179.254 DHCPACK from 172.16.179.254 (xid=0x433a9e33) bound to 172.16.179.136 -- renewal in 822 seconds.

then run this command to show your IP:

ip addr or ifconfig

then you should add to startup for auto/start : go to : cd /etc/init.d

create net-autostart file with sudo vim and save it:

#!/bin/bash
# Solution for "Centos Connection from VMware"
#
### BEGIN INIT INFO
# Default-Start: 2 3 4 5
# Default-Stop: 0 1 6
### END INIT INFO
dhclient -v

run command :

chmode +755 net-autostart

chconfig --add net-autostart

restart virtualbox

  • The OP isn't using VMware. Well, according to the tags they're using virtualbox. – roaima Mar 25 at 21:02
  • @roaima I don't think it is really matters in this case – Denis Sablukov Mar 25 at 22:35
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    @farhad azim thanks, it seems to be working, but I'll wait a while to be sure. – Denis Sablukov Mar 25 at 22:38
  • @DenisSablukov I couldn't work out what this solution is trying to fix, so I couldn't assume the VM environment was irrelevant. – roaima Mar 25 at 22:41

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