Finding a dchp client id

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Cisco IOS DHCP Client Identifier |

Note If you do not include a username in the authentication configuration, the router or switch does not perform authentication; however, the IP address is provided by the local pool if it is configured. Whether to install default route in routing table received from dhcp server. To force client not to ignore option 3 set special-classless. Corresponds to the settings suggested by the network administrator or ISP. If not specified, client's MAC address will be sent.

Linux find DHCP server IP address using CLI

Distance of default route. Applicable if add-default-route is set to yes. Host name of the client sent to a DHCP server. If not specified, client's system identity will be used. Execute script on status change. This parameter is available in v6. Renew current leases. In any event, I'm trying to determine what my DHCP and DNS info is, because I can ping some hostnames inside and outside the network, but I might be missing some internal DNS server entries, in which case, I'll need to know how to add those, but I also want to make sure I can clearly see what my setup is.

Anyway, sorry for the novella, but I'm just trying to figure out how to see the full networking details on my new server, so I can better troubleshoot the issue at hand. Example for a computer with an interface name of ens5 :.

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This question has an accepted answer, but I wanted to add some details that stumped me and that might help others when applying this info to Ubuntu While Then, as noted by doug-smythies, a netplan ip leases can be run on the interfaces listed to get the lower level data. Ubuntu Community Ask! Home Questions Tags Users Unanswered.

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Asked 1 year, 5 months ago. Active 2 months ago.

DHCP Lease Renewal (on MAC)

Viewed 11k times. Dieckmann J. Dieckmann 38 1 1 gold badge 1 1 silver badge 5 5 bronze badges. Your interface name is because of the "predicable interface names" change a few years ago.


I think you should be able to check lease information with netplan ip leases ens , however it is currently broken for dhcp. Looks like I actually got some results with netplan ip leases ens so thanks for that. Dieckmann May 22 '18 at The yet to be published network updates to the Ubuntu Serverguide does not have a dhcp DNS override example.

See if the DNS setting examples here for static can be applied to a dhcp yaml config file. Doug Smythies Doug Smythies 8, 3 3 gold badges 18 18 silver badges 32 32 bronze badges. Thank you for your reply!