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Questions tagged [ipv4]

Questions related to the fourth version of Internet Protocol , which is one of the core protocols of standards-based internetworking methods in the Internet.

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Ubuntu Server 18.04 no IPV4 after resume

I fail to get ipv4 working on an ubuntu server 18.04 after it was suspended and resumed. The only way I get ipv4 running again is reboot. The system is installed as a guest in a vmware virtual machine....
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841 views

Need to configure XRDP service to listen using IPV4 not TCP6 [duplicate]

I have installed xrdp on ubuntu 18. xrdp by default listens to 3389 so that it can support Window RDP When I run "netstat", it shows that the service is listing with tcp6 and IPV6 syntax (colon ...
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20 views

IPv4 Unknown (cause Nxdomain problem)

my IPv4 information on connection information look like this IPv4 IP Address : unknown Broadcast Address : Unknown Subnet mask : Unknown Genaral an IPv6 looks normal this problem cause me ...
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0answers
116 views

have a dhcp fail when i try to connect to my home wifi

I've recently installed xubuntu 18.04 and found out, that i can't connect to my home wifi. It just tries to connect to it for about 30 seconds and then i have a "no connection" icon. Here are ...
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1answer
1k views

IPv6 is working, but IPv4 isn't

I've got a new laptop running Ubuntu 16.04 that worked like a charm for a couple of weeks but has now lost its appetite for connecting to the internet via Wi-fi. I know it's not a problem with my ...
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0answers
297 views

Ipv6 but no Ipv4 via wired connection on Ubuntu 16.04

I am unable to access the internet via my wired connection. Wlan is working fine. While on Wlan I am able to get an IP address automatically via DHCP and connect to the Internet. When I attempt to ...
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1answer
441 views

What does the @ sign mean after a tunnel interface?

I previously asked a question on setting up a ipv4 to ipv6 tunnel. I answered my own question and this is configuration output from my previous question here https://askubuntu.com/a/992872/13903 4: ...
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1answer
254 views

Can connect, but no internet on Ubuntu 16.04, works fine on windows 10 (IPV4/IPV6 problem)

I am having problems with my internet connection on Ubuntu 16.04. I can connect to the wireless network but i have no access to internet, In my laptop i also have windows 10 and it can connect and ...
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1answer
396 views

Running IPv4 only application on IPv6 only network

I have an Ubuntu 16.04 machine connected to an IPv6 only network. One application I want to run on this machine appears to not work properly with IPv6. I know 464XLAT is supposed to make such ...
3
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1answer
3k views

How to disable IPv6 on Windows Subsystem for Linux?

I tried to disable IPv6 by adding in /etc/sysctl.conf: net.ipv6.conf.all.disable_ipv6 = 1 net.ipv6.conf.default.disable_ipv6 = 1 net.ipv6.conf.lo.disable_ipv6 = 1 and then running sudo sysctl -p to ...
3
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0answers
476 views

How do you hide ipv6 address using proxychains with tor?

When using proxychains with tor, I am able to hide my ipv4 address with a random ipv4 address, though when checking my ipv6 address on http://test-ipv6.com/ it still gives me my real ipv6 address. I ...
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0answers
224 views

How to set up IPv4 DHCP server?

I am pretty new to Ubuntu and would like to know how to set up an IPv4 DHCP server. I am using a desktop with Ubuntu OS and connect my laptop (Windows 8 OS) through an ethernet cable to test using ...
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1answer
448 views

Using UFW, if I create a rule, will it apply to both IPv4 and IPv6? [closed]

Will UFW create the appropriate rules in both iptables and ip6tables?
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1answer
681 views

How to get IPv6 ip from the router, what is my subnet mask?

This is the router asking to put an address but when i insert 192.168.0.2 it fails what is the IPv6 value for that to setup in the router? So that i get proper IPv6 in Ubuntu? In Ubuntu from the ...
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0answers
156 views

Apache2 server not responding with IPV4 address

I run an apache2 web server on Ubuntu 14.04 that I use to save files from my laptop with Owncloud. I used to be able to connect via HTTP using my external IP address (IPv4), and I used that public ...
2
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0answers
51 views

How to verify that IPv4 is disabled on a machine?

Running a 16.04 VM and disabled IPv4 in Network Manager but I'd like a way to verify that IPv4 isn't being used.
2
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0answers
1k views

How do you disable IPv4 on 16.04

I'm trying to disable IPv4 on a system I'm working on to check how a project interacts over purely IPv6. Does anyone know the following: How to disable IPv4 (and verify that it is indeed disabled) ...
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2answers
614 views

Fresh Ubuntu install unable to connect to IPv4 addresses

I just recently made a fresh install of Ubuntu 16.04 on my newly built desktop. However I'm having some internet connectivity issues. Please bare with me as I am a linux noob. Anyway, I'm unable to ...
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2answers
2k views

Where is the “automatic (DHCP) addresses only” option in network?

I am trying to change my DNS to Google Public following these steps. However, my IPv4 settings lack this option. Why is it missing?
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1answer
472 views

Static ipv6 on Ubuntu

I need to create a virtual machine with Ubuntu, setting static IPV4 and IPV6 address. It is working, however, I always have an extra IPV6 address, that I want to get rid of. I set everything in etc/...
0
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1answer
645 views

Have to use -o Acquire::ForceIPv4=true to do apt-get update/upgrade

I am looking for an other workaround to my problem that apt-get upgrade/update/install wont work via IPv6. I cant use the software center neither can I use the system update center for anything. I ...
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2answers
2k views

How i can disable ping request in Ubuntu 16.04?

I want to disable ping request in Ubuntu 16.04 through Terminal. So another host in the network can not know about my system.
2
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1answer
727 views

Disable ipv6 in ubuntu 14.04

I found that post How to disable IPv6 on Ubuntu? I need to ask about this file /etc/default/bind9. I couldn't find this file. Where can i find it?
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2answers
1k views

Cannot read the changes in net.ipv4.ip_local_reserved_ports

I'm new to Ubuntu and I tried to edit this file net.ipv4.ip_local_reserved_ports but cannot read changes. I got empty after I checked the file again.
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1answer
79 views

Configuration of static IP address

I used the link to set-up configuration of IP address but I got this Failed to bring up eth0 command I used: sudo ifup eth0 configuration is # The primary network interface auto eth0 iface ...
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1answer
233 views

bind before connect

i'm new to ubuntu and networking Is there a method in Linux to check how many ephemeral ports are left available? I've problem with "Address already in use" errors as a result of running out of ...
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2answers
2k views

How to enable IPV6 packet capturing in WireShark at the same time as IPV4?

I am running Ubuntu 15.10 with GNOME 3.18, and for some debugging work need to capture IPV6 packets going to and from a specific port, however I understand that by default IPV6 packets are not ...