Questions related to the fourth version of Internet Protocol , which is one of the core protocols of standards-based internetworking methods in the Internet.
Questions tagged [ipv4]
61 questions
29
votes
6 answers
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 router or ISP, because I'm writing this post using my…
cjolley
- 857
17
votes
4 answers
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 reload the /etc/sysctl.conf settings - but that…
7
votes
2 answers
Ubuntu Server 20.04 - Netplan configuration for dynamic IPv4 and static IPv6
TL;DR
Does anyone have a working netplan configuration that sets a dynamic IPv4 and a static IPv6 under Ubuntu Server 20.04?
What works
My provider (OVH) gave me a server with this configuration in /etc/netplan/50-cloud-init.yaml out of the box:
#…
yaap
- 311
7
votes
2 answers
Installation of server does not accept subnet CIDR
I try to install a server from scratch with a fixed IP address. For installation I use the provided ISO of 18.04.3 and the installation agent of Ubuntu.
First I thought that my understanding of the subnet CIDR was wrong, but after I received…
Marged
- 173
4
votes
1 answer
Ipv6 vs Ipv4: is there a way to force ipv6 use?
Ubuntu/Linux beginner here, so I was wondering if there's any way to force Ubuntu to prefer IPv4 or IPv6 when resolving a name (ex.: google.com has ipv4 and ipv6 addresses. is there any setting which allows me to say that IPv6 should be preferred…
Luis Abreu
- 197
4
votes
1 answer
My Ping result are returning an IPv6 instead of IPv4
I am new in Linux. So, I am running dual boot Linux and Windows 11. All my OS is on the latest version. I try to ping google.com in Linux, but I get returned IPv6 instead of IPv4. Here is the ping result:
$ ping google.com
PING…
4
votes
0 answers
Need to configure XRDP service to listen using IPV4 not TCP6
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 delimiters)
Windows remote desktop client resolves the…
Rick
- 41
3
votes
1 answer
Using UFW, if I create a rule, will it apply to both IPv4 and IPv6?
Will UFW create the appropriate rules in both iptables and ip6tables?
3
votes
0 answers
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)
Check that IPv6 is enabled
sreya
- 151
- 3
3
votes
1 answer
Disable IPv4 on Ubuntu 16.04 LTS
I want to create a pure IPv6 environment or disable IPv4 completely, not just on the interface. If it is impossible, I want to disable IPv4 on boot via the command line or a configuration file.
Thuong Tran
- 31
2
votes
1 answer
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: he-ipv6@lo: mtu…
Tek
- 348
2
votes
1 answer
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 applications work. The NAT64 part is operated by the ISP…
kasperd
- 1,779
2
votes
0 answers
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.
sreya
- 151
- 3
2
votes
2 answers
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 connect to many websites but CAN connect to…
Kevin Cianfarini
- 131
- 1
- 4
2
votes
2 answers
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?
