1st. Check if the address is already given (or fixed on a computer), try to ping it. 2nd check event viewer. 3rd Use a sniffer to find out whats going on (using ipconfig /release ipconfig /renew) I think that you have 2 options, 1st reset the device and try again, and discard ports and nics. jose

The Dynamic Host Configuration Protocol (DHCP) is a network management protocol used on Internet Protocol networks whereby a DHCP server dynamically assigns an IP address and other network configuration parameters to each device on a network so they can communicate with other IP networks. Jan 24, 2019 · In short, DHCP Lease Time is the amount of time in minutes or seconds a network device can use an IP Address in a network. The IP Address is reserved for that device until the reservation expires. For computers and other network devices, to communicate on a network they need a unique IP Address. Mar 20, 2013 · This message is the exact opposite to DHCPACK described above. This message is sent by the DHCP server when it is not able to satisfy the DHCPREQUEST message from the client. 6. DHCPDECLINE. This message is sent from the DHCP client to the server in case the client finds that the IP address assigned by DHCP server is already in use. 7. DHCPINFORM When you use DHCP IP reservation, you're telling your Wi-Fi network to assign the same IP address to a specific device whenever that device connects to your network. Why use DHCP IP reservation / Static IP. Most devices use DHCP, which assigns dynamic IP addresses, as a default. But sometimes you want devices to always have the same IP address. what did not help me was that the errror dnsmasq: failed to create listening socket for 192.168.2.1: Address already in use is possibly a bit mis-leading with its "Address already in use" as it is actually the port already in use but applying similar logic to this answer netstat -anup pointed me to in.tftp which i stopped with service tftpd-hpa

openstack undercloud install fails with the error: failed to bind DHCP server socket: Address already in use: As seen in install-undercloud.log: Jan 28 14:29:16 manager systemd: openstack-ironic-inspector-dnsmasq.service: control process exited, code=exited status=2 Jan 28 14:29:16 manager systemd: Failed to start PXE boot dnsmasq service for Ironic Inspector. Jan 28 14:29:16 manager systemd

sounds like the dhcp client is already running. do a "ps ax | grep dhcp" and kill off the old dhcp client. then start up a new one. My Mac OSX 10.4.11 clients are getting a message that the address DHCP is issuing to them is already in use. The entry in DHCP shows bad address and an incomplete Unique ID which is not consistent.

Address already in use means that the port you are trying to allocate for your current execution is already occupied/allocated to some other process. If you are a developer and if you are working on an application which require lots of testing, you might have an instance of your same application running in background (may be you forgot to stop

1st. Check if the address is already given (or fixed on a computer), try to ping it. 2nd check event viewer. 3rd Use a sniffer to find out whats going on (using ipconfig /release ipconfig /renew) I think that you have 2 options, 1st reset the device and try again, and discard ports and nics. jose May 31, 2017 · The DHCP server will ignore any client ID fields in the DHCP messages and use this subscriber ID as the client ID. The DHCP client is preassigned IP address 10.1.1.7.! ip dhcp use subscriber-id client-id ip dhcp subscriber-id interface-name ip dhcp excluded-address 10.1.1.1 10.1.1.3 ! From what I understand ( and I had to Google for it), "BAD_ADDRESS" is what is written in Windows 2008 DHCP Server logs when it goes to allocate an IP address, but finds that a host is already using it (the DHCP server does a ARP or ICMP test) and logs this event. Jun 15, 2020 · the excluded-address command simply tells the DHCP server not to try to allocate these IP addresses, it means they are already statically assigned. Now for MAC binding, you must do this: 1) not exclude this address. 2) when DHCP dynamically assigned an IP to the device use this command to view the client-identifier: Apr 25, 2019 · An unnumbered interface can “borrow” the IP address of another interface already configured on the device, which conserves network and address space. For DHCP clients connected though the unnumbered interfaces, the DHCP relay agent automatically adds a static host route once the DHCP client obtains an address, specifying the unnumbered