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You could use class-based assignment. The basic idea is that you could create a new User class on the DHCP server, with some identifier that you would assign to your domain-joined machines. Then on each machine, you would set the User class ID: ipconfig /setclassid "Local Network Adapter" "MyDomain" You could use a startup script defined in GPO to set that ...


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What you can do on the Android devices: Network Tools can do a traceroute. ipconfig will show you more network settings (like the gateway and lease duration) than the standard menus. See what those settings are to determine whether DHCP is handing out the correct info or not. If it looks like the device does have all the correct info (same as when you ...


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I just ran into this situation and scoured unsuccessfully for an answer until now. Old Server: Server 2003 with DC(domain1 active), DHCP(disabled), DNS(disabled and role removed) New Server: Server 2008 R2 with NEW DC(domain2 active), NEW DHCP(active), NEW DNS(active) Clients are XP and Win7. Clients were all set to dynamic DNS and DHCP. Ipconfig /renew ...


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The sad thing is that I could not identify what made this work but a short note to those seeking to do the same: I was able to have the ESXi host register itself in the DNS. DHCP DNS is now enabled: /etc/vmware # esxcli network ip interface ipv4 get Name IPv4 Address IPv4 Netmask IPv4 Broadcast Address Type DHCP DNS ---- ------------- ------------- ...


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looks like its your client who is trying to update a record . Do you have a reverse record zone ? It could be a problem on dhcp with right to update the zone . Its new or a old problem ?


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Update to dhcpd 4.2.x. Those parameters are user configurable in that version. https://kb.isc.org/article/AA-01193/0/DHCP-4.2.7-Release-Notes.html


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If you've created an external virtual switch bound to those NICs then you shouldn't have TCP/IP bound to those NICs unless you check the box "allow management operating system to share this network adapter", which it sounds like you didn't do and don't want if you have a dedicated NIC for the Host communication. It sounds like you enabled TCP/IP on those ...


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Yes, you need ebtables to apply netfilter rules on a bridge. The match rule is ip with parameters --ip-source-port and --ip-destination-port. You'd configure ebtables to allow the traffic you want, then an explicit drop for any other traffic. The DHCP client port is UDP 68, the DHCP server port is UDP 67. I believe the correct command syntax and order ...


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I've also stumbled across a method to assign multiple static IPs and keep the DHCP functionality on a single interface - http://archive.news.softpedia.com/news/Both-DHCP-and-Static-IP-addresss-at-the-same-time-47494.shtml not exactly what you are looking for, but might help.


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Old topic, but if you got custom DHCP option defined the SSG5 got problem handling those, thus lead to strange error. Please update the firmware in worst case.


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Disclaimer: I haven't tested this, and it's mostly taken this JAMF Nation discussion, with some additional notes from an old AFP548 article. You need to use the bless command (which is part of the standard OS X install). The simple format for configuring NetBoot is: sudo bless --netboot --server bsdp://${ipAddress} ... but unfortunately that only ...


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The biggest reason using IP addresses you aren't actually assigned (or have access to) doesn't work is because it simply will not route. Your ISP has a network that is assigned to it, from either ICANN, or whomever. The equipment that attaches to that will know how to route information within one of those addresses, and forward it to the equipment that ...


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DHCP is of very little relevance to this question. With DHCP the ISP can tell the customer, what the address of the customer is. But between ISPs it works differently. Between ISPs communication about who has which IP addresses is done using BGP. In this context the networks are known as autonomous systems, to get an initial understanding it is a good ...


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So it looks from your setup that you're using the HP 2920 as a router. In order to do this you will need to add static routes on the 2920 to allow for communication between the vlans. If you add the following to your config it should fix it. Put the route to the outside world as your default route- I put it as 1.1.1.1 for the sake of illustration, replace ...


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IP addresses are a lot like the Post Office. You cannot just declare that your ZIP code is 60605-3234 because you like the number. That number is assigned to a specific block of houses somewhere in Chicago, IL. If you put that ZIP code on your mail as your return address, you will never get any mail. IP addresses are much the same. Just because I like ...


3

If ISP A assigned one of their users an IP address in ISP B's network not much would happen aside from that user's internet not working. Within the ISP's network there's not liekly to be any routing information for that network, so even if someone within ISP A's network wanted to talk to this rogue address it'll get passed up through the gateways to a core ...


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The worst bug that can happen is a DHCP reservation that got lost and another customer in your range got your IP that way. The helpdesk can easily kill the remote modem and free it up for you. For having a IP in the wrong class, that would mean a general failure on all the data layer from your house to the ISP and a failure in the main DHCP's server. I ...


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DHCP is based on a "DORA" (Discover-Offer-Request-Accept) protocol; Minimally the Discover packets are broadcasted on a MAC domain by the booting clients searching for a DHCP server. Broadcast traffic is by default blocked by routers, then normally you will not be able to boot PXE clients on network 172.16.87.xxx out of a DHCP server located at ...


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Yes, this is possible provided your target network is configured to relay DHCP and TFTP traffic. You'll likely need IP "helper addresses" on the client's network that point back to the actual DHCP server's IP address. See: Broadcast between VLANs


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I had this similar issue and performed the below checks before coming up with a fix. Verify if the server or the service account that is used to dynamically update dns from DHCP is added into the inbuilt security group "DnsUpdateProxy". The latter option would be the suggested and preferred one. Make sure that the dhcp credentials are present on the server ...



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