Posts with the tag DHCP

Solving NAK DHCP Problems with the Fritz!BOX 7490 router

If you encounter problems like these:

dhcpcd[13577]: eth0: broadcasting for a lease
dhcpcd[13577]: eth0: offered 192.168.1.64 from 192.168.1.1
dhcpcd[13577]: eth0: reject NAK via 192.168.1.1

Online you will find a lot of old threads suggesting things like commenting out the line require dhcp_server_identifier in the file dhcpcd.conf. Didn't help in my case.

This happened...

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Private Subnet with Ubuntu as Router

Suppose we have the following setup:

  • A Computer with Ubuntu installed and two physical network interfaces (might also be virtual, but that's advanced)
  • We have an internet connection on this computer set up and working. Internet traffic goes out (and in) on the network interface eth2
  • We want to create a private subnet
  • The...

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