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2
votes
1answer
95 views

Cant deploy images with WDS: PXE-E16: No offer received

I am currently playing around with a WDS lab environment on a virtual 2012 R2 server, which is patched to the latest available update-level. This server is running the DHCP server role and has two ...
0
votes
0answers
85 views

Sonicwall L2TP Server is using a “phantom” internal DHCP server

Following a few articles on options 121 and 249, I'd like to push out routes to the L2TP VPN clients using the internal DHCP server on the Sonicwall. However, the Sonicwall seems to be using a ...
1
vote
1answer
71 views

ISC dhcpd dynamic bootfile-name. Is this possible?

Actually I want to dinamically assign bootfile-name based on clients MAC. I have tried this config: option bootfile-name concat( binary-to-ascii(16, 8, "", substring (hardware, 1, 6)), ".cfg"); ...
0
votes
1answer
78 views

How to trigger DHCP request and inspect the reply from DHCP server

Is it possible to trigger a DHCP request from my DHCP server and then sniff and inspect the whole DHCP reply from the server to see what options/parameters it sends to the clients?
0
votes
0answers
23 views

Empty declaration

Someone gave an answer about an unfunctional DHCP server. He said: "Create an empty declaration for your 10.4.1.0/24 network". subnet 10.4.1.0 netmask 255.255.255.0 { } What exactly is an EMPTY ...
0
votes
0answers
52 views

DHCP User Class ID Notation (numerical vs. ASCII)

Creating a new DHCP User Class (on Windows Server 2008 (R1) 32-Bit) on can set a "Display Name" – here SuperDuperClass – and define the User Class ID numerically (1st & 2nd column) or ...
3
votes
0answers
69 views

Assigning option based on class membership inside the subnet section

We are looking for a way to do something along these lines in the dhcpd.conf file: subnet ... { #couple of options for the subnet here pool { allow members of "class-name1"; ...
1
vote
0answers
281 views

Libvirt providing bootp options without being configured to do so

I have a virtual network configured in libvirt and configured to provide DHCP (via dnsmasq) but not configured to provide bootp information (see below), but when I boot an iPXE ISO and look at the ...
1
vote
0answers
132 views

How to send several instances of the vendor-specific options to a DHCP server using dhclient?

I need to send vendor-options to DHCP server using dhclient (ISC). I've added following lines in the dhclient.conf: option dhcp6.vendor-class code 16 = {integer 32, integer 16, string}; send ...
-3
votes
1answer
863 views

Can I see DHCP options on my network from a windows client? [closed]

Is there anyway to see the DHCP options configured on the server from a windows client (win 7) with no login / admin access to the server?
1
vote
1answer
191 views

Why use FQDN as DNS-server option in DHCP?

I've seen multiple default configurations of DHCP-servers with a FQDN set as the DNS-server option. Doesn't this imply a catch-22, or the need for that DNS-server to be in the hosts file of every ...
2
votes
1answer
126 views

Cannot assign IP address according to an option parameter

I have this DHCP conf file: authoritative; option domain-name "XXX.XXX.XX"; allow bootp; ddns-update-style ad-hoc; class "karpuz-kabugu" { match if (substring (option user-class, 0, 6) = ...
1
vote
1answer
1k views

Mac OS X Server Configure DHCP Options 66 and 67

I need to configure Mountain Lion (10.8.2) OS X Server BOOTP to provide DHCP options 66 and 67 to provide PXE booting for PCs on my network. I have tried following the bootpd MAN pages, but they are ...
1
vote
0answers
237 views

setup static route via dhcp

I try to push static routes over dhcp in a redhat enviroment. I have already activatet the option rfc3442-classless-static-routes. The dhcp client is also configured to request this optien as ...
2
votes
1answer
396 views

How to pass a vendor-specific options to a DHCP server using dhclient?

I need to send vendor-options to DHCP server using dhclient (ISC). As I understand I need to describe that options in the dhclient.conf. Do I need make new "space" for options? Or I can do "send"? ...
3
votes
2answers
907 views

How to save DHCP option 43 on Windows 2008 server?

I need to retrieve the DHCP option 43 from my DHCP server (Linux ISC DHCP server) on a Windows 2008 server (or any other Windows version, as long as the code 43 is specified in the Parameter request ...
1
vote
1answer
2k views

ISC-DHCP-SERVER - Can different reservations get different options (router, DNS, etc)?

Suppose there's just one Ubuntu / ISC-DHCP (v3) server on the network. I've successfully been able to provide "DHCP reservations" meaning MAC foo gets ip 1.2.3.4, whereas everyone else just gets an ...
2
votes
1answer
169 views

DHCP IPV6 Environment

May I know what are the changes needed in the DHCP message formats if I want to convert into ipv6 environment? Now I am using ipv4 dhcp client and ipv4 dhcp server. But I want to implement this using ...
4
votes
2answers
13k views

Linux DHCP server option 43 vendor-encapsulated-options, how to format/encode?

I admin the network for a small business which has an IPCop firewall box providing DHCP services to the network (and various other services). The DHCP server in IPCop appears to be dhcpd and IPCop ...
1
vote
2answers
1k views

Two DHCP server in the same subnet

So I change jobs recently and in this new workplace I've found that we've actually got two DHCP servers. In the very same subnet, and they both have the same scope. I did not set up this but I see ...
0
votes
2answers
595 views

Which DHCP clients use which options?

I would like to use my DHCP server to give information about some local services like ntp, using DHCP options as explained in the dhcp-options(5) manpage. Does anyone here know, or is there a good ...
2
votes
2answers
1k views

Is the native DHCP client for MacOS X able to send “Vendor class identifier” (opTag 60) in a DHCP request?

Is it possible for MacOS X (current version or in any previous one) to easily force DHCP client to send to DHCP server, at the beggining of the conversation - in DHCPDISCOVER packet - option "Vendor ...