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Questions tagged [ipv4]

Refers to the 4th revision of the Internet Protocol, where addresses are usually displayed in the form: 192.0.2.235

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I once gave my Ethernet a static IP-address but now it changes to it automatically all the time? [on hold]

My question is about the error inside my Ethernet Adapter inside the Ipv4 protocol. I screwed things up inside the registers, I guess. How to fix it that it never gives it a static IP address again? ...
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how to fix quad zero in nslookup queries?

I'm a qualified network technician (CCNA,MTCNA, MTCRE) and majoring in informatics, but this case baffled me. system : Windows 10 Pro x64 output from ipconfig /all Wireless LAN adapter Wi-Fi: ...
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28 views

Using Fritz!Box 3490 to forward external traffic to internal servers

I have a Fritz!Box 3490 along with 5 usable external IPv4 addresses provided by our ISP. The Fritz!Box is to replace our existing DrayTek 2925. One of five IP addresses is an MX; so we use that IP to ...
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Windows Server Essentials 2012 resolving DNS to IPV6

I am having an issue when I ping the server by name it resolves into an IPV6 address. I have disabled IPv6 resolution in the DNS settings on the server, then reset the DNS service on the server and ...
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2answers
62 views

Why does my internet connection work even if my ipv4 is 169.x.y.z? [closed]

I'm still fairly new to network diagnostics and was snooping around when I saw comments about checking if your ipv4 was set at 169.x.y.z to know that the network issues revolved around the router not ...
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1answer
51 views

Unable to connect two machines through an Ethernet cable

I have 2 Ubuntu machines, connected via Ethernet cable, machine A at interface eth0 and machine B at eth6. I have configured IP on both machine. ifconfig -a on machine A (showing for eth0 only): ...
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2answers
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What is hard coding in reference to ipv4 and ipv6?

I am trying to wrap my head around IPV6 networks. I have a static IPV4 from my isp and when I am building apps I use what I am assuming is a "hard coded" address. Like the below: //The * are replaced ...
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1answer
32 views

How to share files on all computers back and forth with my isp and second router connected?

I have 7 computers, but I can only share files with computers in router-1 (ISP router), but in the second router, I can't see anything behind it on the network. I have PLDTMyDSL router in philippines, ...
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1answer
34 views

How do i setup a vpn server on a vps with only a ipv6 address?

I have a VPS but it only has a dedicated IPv6 address, i want to setup a VPN on it for me to connect to. How can this be achieved ?
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Dual NIC - similar IP but different networks

I have two NICs installed in a PC. Both have a static IP. Business Network is 192.168.1.173, and Control Network is 192.168.1.75. I need to access a network printer at 192.168.1.63 (which is on the ...
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390 views

No route to host, not able to ping

I am attempting to reach the admin web page of a router connected directly to my laptop via Ethernet cable. The router (a TP-Link WR700N) is brand new, just taken out of the box. It is plugged in and ...
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1answer
671 views

How to SSH to IPv6 only VPS if my ISP only supports IPv4?

I have a server on Vultr ($2.50 plan) that only supports IPv6. But, my ISP right now only supports IPv4 and I can't SSH into that box to do work. How do I SSH into this server? What are the tools/...
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How can “Alternate Configuration” for Ipv4 be re-enabled with Windows 10?

In earlier versions of Windows a network interface could be configured with "Obtain an IP Address Automatically" (e.g use DHCP) as the primary configuration, and an additional IP address could be User ...
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1answer
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My server does not want to port forward or be seen with IPv4 via any circumtances

Hello I know that my english is not that good, and I am pretty much a typo. Now that i got those stuff out of the way I would like some help with my problem. First, in my port forwarding experience ...
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1answer
68 views

Instruct DNS resolver to query specific DNS server for DNS records

Is it possible to instruct the configured DNS resolver to query a specific DNS server for DNS records? The environment only allows DNS requests to a specific IPv4 (the DNS resolver) - other UDP/53 ...
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1answer
288 views

Any workarounds to access websites that don't support IPv6?

Lately I have trouble accessing twitch.tv on any of my browsers and devices. Google Chrome gave me DNS_PROBE_FINISHED_NXDOMAIN so I looked up on... Google and most articles told me to change my DNS. I ...
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dhclient with '-s <server-ip>' flag

I want to understand under which circumstance this command is valid. As i can see, using this command the discover packets have unicast destination ip same as that of the provided server ip while the ...
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Is a class C private IP address range (or even class A or B) both theoretical and practical or is it just theoretical?

My confusion is that, if we were to take, for example, a class C private IP range, it allows 254 hosts. Is this the theoretical amount or is it actually possible to have 254 hosts? I'd assume having ...
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0answers
703 views

CentOS Virtualbox no internet access

I have the following problem: I have a VM with CentOS installed. From this machine, I can't connect to internet, so I can't upgrade nothing installed on it. The VM configuration is: Under Settings -...
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1answer
74 views

Is it possible to connect from my home ipv4 to my ipv6 company VPN

I need to know if it's possible to connect from my home IPv4 network to my company IPv6 network through VPN. Is it possible?
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2answers
125 views

DHClient stops working after resize2fs run

I had a weird issue with my hard drive where the filesystem wasn't occupying the entire partition. After rebooting a couple of times and running resize2fs I fixed this issue, however since doing so I ...
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1answer
141 views

Resolving IPv6 requsets on IPv4 VPS

I have a VPS(Virtual Private Server) from hetzner.com with Centos-6.9 The VPS can only work with IPv4 and the server don't support IPv6. Now i setup and running a proxy on this VPS(shadowsocks). ...
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1answer
2k views

how to access router with IPv6 address?

recently I tried to access my router's setting via 192.168.0.1 (manual said so) as usualy, however, thing is that a year ago I have switched from ipv4 to ipv6 and now ipconfig shows me this: Windows ...
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2answers
162 views

different subnets on the same interface used by virtual machines in brdiged networking

I have one physical server with one network interface. IP forwarding is enabled and firewall configured properly. My provider has assign me one primary IP address and 4 failover IP addresses form a ...
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Netsh batch file, wont remember the gateway

I'm making a little batch file to change some network adapter settings: Can anyone please explain why this works: netsh interface ipv4 set address name="Local Area Connection" static 192.168.1.11 ...
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0answers
58 views

Windows Routing from one ipv4 to another ipv4

Im currently hosting game servers on a window VM and im wanting to add multiple ips to the windows VM which I have done successfully. Now to assign my game servers(on the windows VM) to the public ips ...
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217 views

How to connect to a home IPv4 server over the Internet using IPv6 to bypass Carrier Grade NAT

I am looking for a way to be able to connect to a legacy HTTP server that only supports IPv4 connection that is behind an ISP level NAT. My ISP does issue public IPv6 addresses and I am able to ...
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0answers
72 views

Connect IPv4-only devices to IPv6-only services and vice versa

I have mobile devices (Android), whose network providers do not support IPv6. My fiber network provider (for internet connection at home) uses only IPv6 with Dual Stack lite, so they are only ...
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1answer
95 views

Cloudflare IPV6 Gateway with a Dyn IP via Dyndns

Firstly Apologies if this has already been asked or resolved. My question is this. Is it possible to use a domain from dynv6.com say xyz.dynv6.com and then get cloudflare to do the ipv6 / ipv4 ...
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1answer
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Issue Addressing Website on SBS2011

I have a small local network around an SBS2011 server. I would like to host one or more (low-volume) ASP Net Core 2 sites on this server using the standard port 80. However, I am struggling with the ...
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614 views

Remote desktop to a machine on ipv6 from ipv4 network

Background I have a ipv6 connection at home my prefix is 2a02:xxxx:xxxx:xxxx::/64 I do have a ipv4 address but this seems just to be a shared IP and I have no control over it. My ISP is Virgin Media ...
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0answers
55 views

Server rejects all ipv4 traffic, but allows ipv6 (Bash/Ubuntu on Windows)

I've been trying to set up a home server, with admittedly a home ISP (Comcast). I have been able to connect to my HomePC using the ipv6 address. However, this doesn't work well, since the address ...
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2answers
135 views

A weird IP with ping: different from nsLookup IP: different from actual IP

On another PC Can Google remote desktop into AcerDragon. But when accessing it via network, it cannot be found. C:\>ping acerdragon Pinging acerdragon.home **[192.168.1.9]** with 32 bytes of data:...
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1answer
177 views

Getting through an ipv6 -only router with ipv4

My situation is the following, I have a website hosted on a linux machine(with apache2), unfortunately my router (unitymedia) provides only a port filtering for the IPv6 adresses, but no port ...
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0answers
35 views

Losing internet after IP switches from valid public IP to a private IP, what could be wrong?

Basically I have had to call my ISP around 20 times in the last three weeks about this issue. My internet disconnects and my IP changes from a public IP in a valid range for my ISP to something in the ...
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1answer
2k views

I can ping IPv6 but not IPv4

It seems that i can ping google DNS to its IPv6 address 2001:4860:4860::8888 but i can't ping it's IPv4 address 8.8.8.8 luka@luka-Inspiron-3458:~$ ping 8.8.8.8 PING 8.8.8.8 (8.8.8.8) 56(84) bytes of ...
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1answer
920 views

Changing DNS on IPv4 vs IPv6

I want to change my default DNS to Google DNS. Many sites like streamble.com are blocked in my default service provider DNS. After some research I found that, if we switch to Google DNS, we can ...
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0answers
121 views

Connect to ipv6 network from ipv4

In my home I have server and my ISP provide only IPv6 connectivity. Sometimes i need to connect to it via ssh/rdp from other network that IPv4 only. Is there a way to do that?
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How to assign IPs in server interfaces when connected to two similar routers

I need to connect two similar routers with the IPs 192.160.2.4/24 and 192.160.2.6/24 (in the same 192.160.2.0/24 network) to 2 server interfaces (ports) in the same server as shown in the image. ...
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1answer
194 views

FritzBox lists two IP addresses as NSLookup does

My network has a Fritzbox 7390, a raspi connected with it over LAN and my laptop connected over wifi. My raspi is configured to have the static IP address 192.168.178.44, for quite a long time, this ...
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0answers
55 views

IPv4 timing out on certain sites

I study Computer Science and for some coursework this year we investigated pinging different websites with different protocols. One of the questions concerns pinging Netflix and eBay with IPv4 - ...
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0answers
33 views

Change IPv4 settings automatically when AP changes

Is there a way to configure an adapter's IPv4 settings (IP address, gateway, DNS) to change per Access Point (either wireless or ethernet) instead of having them fixed by adapter only? I'd feel ...
2
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1answer
66 views

Solved: whatismyip.net shows ipv6 for my w10 box but ipv4 for my w7 box behind the same router

I am located in Germany but the ipv6 address is from California. I suppose there is some proxy active as I have played with kaspersky and hotspot shield recently. I have disabled both of them though ...
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0answers
40 views

Is there an advantage to using separate IPv4 and IPv6 reverse delegation servers?

Currently, we have the following DNS servers setup for reverse DNS of IPv4 and IPv6 ranges: rdns0.v4.rdns rdns1.v4.rdns rdns2.v4.rdns rdns0.v6.rdns rdns1.v6.rdns rdns2.v6.rdns Where the v4 servers ...
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1answer
145 views

Routing between two

I have the following network setup: From Laptop I can ping any IP in the 192.168.2.0/24 network and I have internet access. On Tower PC I can ping any IP in the 192.168.2.0/24 network (including 192....
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2answers
1k views

Can I reach my ipv6 website via ipv4?

At my researching time, I found these relevant topics: access ipv6 website over ipv4 network and IPv6 Webserver reachable for IPv4 only Clients. My situation: I have a public ipv6 and a local ipv4 at ...
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1answer
362 views

Asterisk (VOIP) port forwarding on TP-LINK

I have local Asterisk server on Ubuntu 16.04. Its address is 192.168.0.101:5060 and I would like to be allowed to talk with other users when I am outside local network. I tried this but it doesn't ...
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1answer
62 views

Communicate with a single-user Ethernet-connected device — OK to use shared LAN?

I have a workstation that has two network ports. One of them is required to connect the PC to a local area network. The other port is available to accommodate an Ethernet device that I (and nobody ...
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1answer
37 views

Can I disable the broadcasting on this machine?

I've been given access to a Windows Server 2008 R2 Enterprise machine that was provisioned like this: network 1.2.3.136/30 gateway 1.2.3.137 IP 1.2.3.138 broadcast 1.2.3.139 netmask 255.255.255.252 ...
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3answers
207 views

Trouble with fiber modem

My neighborhood just activated fiber service to the home (http://fiber.usinternet.com/ in Minneapolis), but I'm having trouble connecting downstream devices to the modem. It's a CTC Union GSW-1005MS ...