All Questions
101
questions
4
votes
3
answers
22k
views
How do I create a DHCP address reservation for an Internet Connection Sharing client?
I have Internet Connection Sharing enabled on a Windows computer that's hosting the Internet connection. I have manually assigned what IP address to be used with the DHCP service on the host by ...
0
votes
0
answers
47
views
Access Point ip address is different in Web UI than what router shows
I have an Edgerouter X as router and a Fritzbox as access point. The ER-X shows a different ip address for the fritzbox than what the fritzbox itself show in its own network settings. Also the ...
- 101
0
votes
0
answers
622
views
Issues when setting up static IP on Debian bookworm
I have recently started hosting my server from my PC and everything worked perfectly until my public IP changed. I taught I have successfully setup a static IP but I didn't. Now I am in a loop of ...
- 1
0
votes
1
answer
64
views
Do DHCP and IP depend on each other?
DHCP is a protocol at the application layer, so it must depend on the IP protocol in the network layer. But the IP protocol requires assignment of IP addresses to network interfaces, which is the job ...
- 465k
0
votes
1
answer
311
views
block RFC1918 networks in pFsense for LAN seems not to work
Description of the issue: I've created a rule inside pFsense to block any traffic directed at RFC1918 originating from my OPT1 network, and it works fine. Now when I open terminal on OPT1 network PC I ...
- 465k
-1
votes
1
answer
466
views
Two-routers with devices that share same IP? [closed]
If I connect two routers via ethernet, I can have to W-LANS.
I'm not sure about many things with this configuration.
These questions come to my mind that I couldn't wrap my head around:
So would I ...
- 62.4k
0
votes
0
answers
243
views
Open Media Vault DHCP IP not showing on Router's connected devices
I've currently got a media server set up and working on my local network. It's running openmediavault.
It connects to the network correctly and can be accesed from any other machine on the network ...
- 101
6
votes
3
answers
24k
views
What is the "Alternate Configuration" tab in TCP/IP settings
As I know there is two choice for configuring a computer IP address in the network. Assigning a Static IP or obtaining a dynamic IP from a DHCP server.
But what is the Alternate Configuration in ...
- 1,429
0
votes
1
answer
621
views
Custom subnet mask while using DHCP
I'm trying to connect to an RPI on the same physical network over SSH. Normally, I'd do this with a simple ip a, ssh xxx@ip, but because of the network it doesn't work. There are several problems:
...
- 1
1
vote
1
answer
157
views
Macvtap connectivity lost after a few hours?
I setup a macvtap interface like this:
ip link add link eth0 vlan type macvlan mode bridge
ip address add 10.0.0.17 dev vlan
ip link set dev vlan up
ip route flush dev eth0
ip route flush dev vlan
ip ...
- 593
0
votes
3
answers
480
views
What is the relationship between my public IP address and the address assigned to my NIC?
When I run an online IP-lookup tool, like https://whatismyipaddress.com/, I get an IP address like 24.253.65.208.
But I've set up my home router as a DHCP Server and I've assigned static IP addresses ...
- 465k
0
votes
0
answers
89
views
Determine/Configure which IP address gets offered next by a DHCP server?
I need a way to determine the next IP address a DHCP server will offer.
RFC 2131 states:
Each server may respond with a DHCPOFFER message that includes an available network address in the 'yiaddr' ...
- 13
0
votes
1
answer
149
views
Windows Home Server running for the first time in years - How to find out its IP address?
Several years ago I used a small Acer Windows Home Server. I have not used this device in years. Now I would like to access it again to see what data is still on it.
Beside some USB ports its offers ...
- 17k
-1
votes
1
answer
255
views
Is the network address of the DHCP offer, the IP of the interface that requests it?
Suppose the DHCP offer is 118.112.200.14 / 24, which is acknowledged, what is the IP that the interface chooses as its own. I would think it is 118.112.200.0, the network address after applying the ...
- 106k
0
votes
2
answers
2k
views
What is the best practice for assigning static IP addresses? [closed]
In my scenario, I would be assigning IP addresses to security cameras.
I am wondering if I should assign a static IP address from the device itself, or have a static entry on my DHCP server with their ...
- 338
1
vote
1
answer
6k
views
Can't connect with IP outside the DHCP range
My modem/router (it acts as both) has an IP of 192.168.0.1. The subnet mask is 255.255.255.0. The range of IP addresses used for DHCP is 192.168.0.100 to 192.168.0.200. To be clear, if I connect with ...
CommunityBot
- 1
0
votes
2
answers
3k
views
How does ISP know when to change the dynamic IP?
As I understand, ISP uses DHCP protocol to give out IPs from some pool. Every time they give the IP via DHCP it has a lease time. At the end of a lease time, a router can receive the same IP - but it ...
- 10.9k
0
votes
1
answer
475
views
Zyxel NAS326 not getting IP after powerloss
I bought a Zyxel NAS 326 and configured my router to a static IP. (192.168.0.110)
After power loss, I can't connect to the NAS (the IP is not responding). Every time I need to disconnect physically ...
2
votes
1
answer
2k
views
Prevent networkmanager to disable an interface if dhcp timeout when mixed dhcp and fixe ip configuration
I need to find a way for a computer to have both a fixed ip address AND have be a dhcp client on the same interface. So far it works great, I am using Debian 11 and NetworkManager.
The problem, is ...
- 301
0
votes
1
answer
14k
views
Static IP address of 255.255.255.255
I live in a house with a couple of housemates and I manage our internet connection. When looking in the admin panel of the router I saw that one device has set its IP mode to static and the console ...
CommunityBot
- 1
1
vote
3
answers
3k
views
network issue after using macchanger. no internet, no ipv4
I used macchanger with these commands:
sudo ifconfig eth0 down
sudo macchanger -r eth0
sudo ifconfig eth0 up
I am using it with virtualbox on a local network, I've never had issue with that before, ...
CommunityBot
- 1
-1
votes
1
answer
33
views
DHCP Configuration options
I want to use Windows Server 2019 as my DHCP server for my company network, the question that I have is do I have to assign static IP addresses to both the Cisco switch and the router provided by my ...
- 73.6k
1
vote
0
answers
195
views
Connecting the old router to the main router
I have Calix 854G-2 as my main router (with IP: 192.168.1.1), and Netis WF2419, the old router that I want to connect with main router via wireless (not able to connect them with cable). In the DHCP ...
- 4,872
2
votes
3
answers
7k
views
Why the IP address of the router is used as the address of the dns server?
These are the steps for converting a router to dhcp:
Why used the router IP as the DNS server IP address in the last case?
Should not use the IP address of servers like Google (8.8.8.8)?
- 1,895
1
vote
1
answer
20k
views
PC is getting wrong IP address despite DHCP
From one day to the other (maybe a windows update was in between, not sure), my PC is currently always (self assigning?) getting an IP address configured like this:
Automatically configured IPv4-...
3
votes
2
answers
3k
views
Why won't my DHCP addresses "stick"?
I've been having some addressing issues that I've been unable to solve, and I'm hoping I can get some guidance about other things to research.
Service provider is Time Warner cable. A static IP is ...
CommunityBot
- 1
5
votes
6
answers
17k
views
Can I assign any static IP address to a device on my network? Or does it have to be within the DHCP servers (or routers) defined subnet?
Currently, my DHCP server is handing out IP addresses in the 192.168.0.1/24 range. What would happen if I set a static IP address on a device of, e.g., 192.168.1.10?
And just out of curiosity, what ...
- 2,479
3
votes
1
answer
2k
views
Why does DHCP Server prefer unicasting over broadcasting and at what cost?
According to this book the DHCP Offer must be broadcast, yet sniffing DHCP packets: it looks like neither OFFER nor ACK is broadcast (or am I mistaken here?). The screenshot was taken during:
ipconfig ...
CommunityBot
- 1
2
votes
1
answer
3k
views
Find unknown static IP without DHCP enabled or gateway configured
I have a device with a static network configuration (DHCP client not enabled).
I don't know the IP address or subnet mask of the device. I only know the MAC address.
The gateway is not configured (0.0....
- 106k
3
votes
2
answers
4k
views
Static IP, DHCP Reservation, or *both*?
Fairly new to networking concepts, have read the thread DHCP Reservation vs Static IP address, and still have a "dumb" question that wasn't asked there:
I have two devices I'd like to "freeze" an IP ...
