All Questions
101
questions
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 ...
