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27 votes
3 answers
53k views

Wrong IP address from DHCP client on Ubuntu 18.04

I'm experiencing a weird issue where my Ubuntu 18.04 (server) box gets issued a wrong IP address during boot from the DHCP server. Running dhclient after boot on the interface results in the right IP ...
NoMad's user avatar
  • 782
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 ...
Isaac's user avatar
  • 728
15 votes
5 answers
71k views

DHCP Reservation vs Static IP address

So after browsing some websites, some people are telling me that static IP address is the best. But others say the DHCP Reservation is just as good if not the same. So what is better? Or are they ...
Ron Crafton's user avatar
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 ...
Samir's user avatar
  • 20.9k
3 votes
2 answers
5k views

How do I permanently assign an IP address with DHCP?

I am wondering if there is anything (software or hardware) out there that can do something I think I may have made up, Dynamic Static IPs. The idea is that when a new device connects to the local ...
o.comp's user avatar
  • 159
2 votes
4 answers
57k views

Getting strange IP Address from router

I've had a router set up for quite some time and it has been working perfectly. My wife called me to tell me the wireless internet wasn't working and when I came home I saw that my phone was connected ...
kfrance's user avatar
  • 58
0 votes
1 answer
865 views

dhclient fails and breaks networking (uses a weird ip/subnet mask settings)

Yesterday the router on the network went bad and seemed to start giving out IP addresses on 192.168.100.x IP addresses, it was unreachable, after a while it seemed to resolve itself and was accessible ...
DangerosoDavo's user avatar
5 votes
1 answer
9k views

How can I determine the IP addresses allocated by DHCP on a router that I'm connected to?

This “router” is not a typical situation. I’m using my phone as a hotspot and can only configure a select number of DHCP options. I can manage the limit on how many devices/clients can use my phone ...
user234831's user avatar