ISC DHCP Users

Re: dhcp-users Digest, Vol 88, Issue 11

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David Elliott

Re: dhcp-users Digest, Vol 88, Issue 11

Thanks Sten for the response.

Client Id (option 61) is included in the DHCP Discover Packet and I tried for several days to parse it and use it, but the Cisco ASA concatenates its MAC address, interface, and the hostname with a serial number, so ClientID is unique for every DHCP Discover . Two requests from same client are different.

So I am using HostName (Option 12) which does what I want and ISC DHCP matches the hostname to the class "PCIWSV01" since the correct IP 172.16.147.131 is assigned first time through.

My problem is that after a lease is assigned, ISC DHCP seems like it does not match class "PCIWSV01" the next time, but the more general "PCIWSVXX" class and assigns 172.16.147.150. Third time it assigns 172.16.147.151.

If I delete the lease 172.16.147.131 paragraph out of Leases file, the next time VPN client requests DHCP, it gets 172.16.147.131 again (which is correct). But next time it will get 172.16.147.150 again, and so on.

Manually deleting the lease 172.16.147.131 paragraph out of Leases file doe not sound like a feasible solution.

Any suggestions?

-------------------------------------------------------------------------------------------------

God still works miracles!! We strive to provide you the best possible support.

If I have not provided you the excellent service you deserve, please contact my manager, Lynn Goolsby at [hidden email] or <a href="tel:615-277-5892" value="+16152775892" style="color:rgb(17,85,204)" target="_blank">615-277-5892

David Elliott
Advanced Systems Engineer
Infrastructure Services Team

LifeWay Christian Resources
One LifeWay Plaza
Nashville, TN 37234-0130
(615)277-8148 fax: (615) 251-5900

On Tue, Feb 9, 2016 at 10:15 AM, <[hidden email]> wrote:

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Today's Topics:

1. SUBJECT: Trying and failing to assign same IP address to a
host (David Elliott)
2. Re: SUBJECT: Trying and failing to assign same IP address to
a host (Sten Carlsen)

---------- Forwarded message ----------
From: David Elliott <[hidden email]>
To: [hidden email]
Cc:
Date: Tue, 9 Feb 2016 09:42:41 -0600
Subject: SUBJECT: Trying and failing to assign same IP address to a host
Desired outcome: Assign same IP address to a VPN client by hostname every time.

Situation: The Cisco ASA VPN firewall does pass the hostname in the DHCP Discover, but does not provide the VPN client's MAC address (it provides the Cisco ASA MAC adress).

What happens: The PCIVWS01 client gets correct ip address 172.16.147.131 first time (and it is written in LEASES file). Second time the VPN client connected, it got DIFFERENT address: 172.16.147.105. Third time it got 172.16.147.151.

What I tried: I commented out the lease for 172.16.147.131 in the /var/lib/dhcp/dhcpd.leases fileand restarted dhcpd service, and the PCIVWS01 VPN client got 172.16.147.131 again!

What must I do so hostname PCIVWS01 always gets 172.16.147.131 ?

========= dhcpd.conf (with example comments removed)==================
ddns-update-style none;

# option definitions common to all supported networks...
option domain-name "lifeway.org";
option domain-name-servers 172.16.41.24, 172.16.41.32;

default-lease-time 86400;
max-lease-time 604800;

log-facility local7;

subnet 172.16.46.30 netmask 255.255.255.255 {
}

subnet 172.17.10.0 netmask 255.255.254.0 {
## dhcp start and end IP range ##
# Test SAND environment
authoritative;
range 172.17.10.76 172.17.10.199;
option subnet-mask 255.255.254.0;
option broadcast-address 172.17.10.255;
option routers 172.17.10.1;

host test-Elliott-Lenovo {
hardware ethernet 00:26:18:23:D1:F6;
fixed-address 172.17.10.100;
}
}
# Classes to specify Ridgecrest PCIClient VPN clients
class "PCIVRC01"{
match if substring (option host-name, 0,8)="PCIVRC01";
}
class "PCIVRC02"{
match if substring (option host-name, 0,8)="PCIVRC02";
}
class "PCIVRC03"{
match if substring (option host-name, 0,8)="PCIVRC03";
}
class "PCIVRC04"{
match if substring (option host-name, 0,8)="PCIVRC04";
}
class "PCIVRC05"{
match if substring (option host-name, 0,8)="PCIVRC05";
}
class "TESTRCC"{
match if substring (option host-name, 0,9)="A00014061";
}
class "PCIVRCXX"{
match if substring (option host-name, 0,6)="PCIVRC";
spawn with option host-name;
}
#
class "PCIVWS01"{
match if substring (option host-name, 0,8)="PCIVWS01";
}
class "PCIVWS02"{
match if substring (option host-name, 0,8)="PCIVWS02";
}
class "PCIVWS03"{
match if substring (option host-name, 0,8)="PCIVWS03";
}
class "PCIVWS04"{
match if substring (option host-name, 0,8)="PCIVWS04";
}
class "PCIVWS05"{
match if substring (option host-name, 0,8)="PCIVWS05";
}
#class "TESTWS"{
#match if substring (option host-name, 0,8)="A00014061";
#}
class "PCIVWSXX"{
match if substring (option host-name, 0,6)="PCIVWS";
spawn with option host-name;
}

subnet 172.16.147.0 netmask 255.255.255.0 {
# PCI VPN Client
authoritative;
#range 172.16.147.64 172.16.147.127;
option subnet-mask 255.255.255.0;
option broadcast-address 172.17.147.255;
option routers 172.16.147.50;
# Specifically named PCIVRC - Ridgecrest PCIVPN clients get these reserved addresses
pool {
allow members of "PCIVRC01";
range 172.16.147.51 172.16.147.51;
}
pool {
allow members of "PCIVRC02";
range 172.16.147.52 172.16.147.52;
}
pool {
allow members of "PCIVRC03";
range 172.16.147.53 172.16.147.53;
}
pool {
allow members of "PCIVRC04";
range 172.16.147.54 172.16.147.54;
}
pool {
allow members of "PCIVRC05";
range 172.16.147.55 172.16.147.55;
}
pool {
allow members of "TESTRCC";
range 172.16.147.63 172.16.147.63;
}
# Any PCIVRC - Ridgecrest PCIVPN clients get these addresses
pool {
allow members of "PCIVRCXX";
range 172.16.147.64 172.16.147.127;
}
# Specifically named PCIVWS - WordSearch PCIVPN clients get these reserved addresses
pool {
allow members of "PCIVWS01";
range 172.16.147.131 172.16.147.131;
}
pool {
allow members of "PCIVWS02";
range 172.16.147.132 172.16.147.132;
}
pool {
allow members of "PCIVWS03";
range 172.16.147.133 172.16.147.133;
}
pool {
allow members of "PCIVWS04";
range 172.16.147.134 172.16.147.134;
}
pool {
allow members of "PCIVWS05";
range 172.16.147.135 172.16.147.135;
}
# pool {
# allow members of "TESTWS";
# range 172.16.147.149 172.16.147.149;
# }
# Any PCIVWS - WordSearch PCIVPN clients get these addresses
pool {
allow members of "PCIVWSXX";
range 172.16.147.150 172.16.147.179;
}
}

=============LEASES============================

root@lwydhcpndcp01:/var/lib/dhcp# more dhcpd.leases
# The format of this file is documented in the dhcpd.leases(5) manual page.
# This lease file was written by isc-dhcp-4.1-ESV-R4

lease 172.16.147.63 {
starts 3 2016/02/03 12:16:57;
ends 3 2016/02/03 19:05:55;
tstp 3 2016/02/03 19:05:55;
cltt 3 2016/02/03 12:16:57;
binding state free;
hardware ethernet 00:1b:d5:e8:eb:93;
uid "\000cisco-001b.d5e8.eb93-A0001406137-Trusted\000";
}
lease 172.16.147.64 {
starts 3 2015/11/25 16:07:14;
ends 3 2015/11/25 16:09:14;
tstp 3 2015/11/25 16:09:14;
cltt 3 2015/11/25 16:07:14;
binding state free;
hardware ethernet 00:1b:d5:e8:eb:93;
uid "\000cisco-001b.d5e8.eb93-A000140612-Trusted\000";
client-hostname "A00014061";
}
lease 172.16.147.65 {
starts 1 2015/11/30 14:31:25;
ends 1 2015/11/30 14:33:25;
tstp 1 2015/11/30 14:33:25;
cltt 1 2015/11/30 14:31:25;
binding state free;
hardware ethernet 00:1b:d5:e8:eb:93;
uid "\000cisco-001b.d5e8.eb93-A000140613-Trusted\000";
client-hostname "A00014061";
}
lease 172.16.147.66 {
starts 1 2015/11/30 19:43:57;
ends 1 2015/11/30 19:45:57;
tstp 1 2015/11/30 19:45:57;
cltt 1 2015/11/30 19:43:57;
binding state free;
hardware ethernet 00:1b:d5:e8:eb:93;
uid "\000cisco-001b.d5e8.eb93-A0001406110-Trusted\000";
client-hostname "A00014061";
}
lease 172.16.147.67 {
starts 2 2015/12/01 22:23:21;
ends 2 2015/12/01 22:25:21;
tstp 2 2015/12/01 22:25:21;
cltt 2 2015/12/01 22:23:21;
binding state free;
hardware ethernet 00:1b:d5:e8:eb:93;
uid "\000cisco-001b.d5e8.eb93-A0001406125-Trusted\000";
client-hostname "A00014061";
}
lease 172.16.147.68 {
starts 1 2015/12/14 18:20:41;
ends 1 2015/12/14 18:47:04;
tstp 1 2015/12/14 18:47:04;
cltt 1 2015/12/14 18:20:41;
binding state free;
hardware ethernet 00:1b:d5:e8:eb:93;
uid "\000cisco-001b.d5e8.eb93-A0001406126-PCIClientVPN-147\000";
}
lease 172.16.147.69 {
starts 1 2015/12/14 18:47:55;
ends 1 2015/12/14 19:07:06;
tstp 1 2015/12/14 19:07:06;
cltt 1 2015/12/14 18:47:55;
binding state free;
hardware ethernet 00:1b:d5:e8:eb:93;
uid "\000cisco-001b.d5e8.eb93-A0001406127-PCIClientVPN-147\000";
}
lease 172.16.147.70 {
starts 1 2015/12/14 19:07:52;
ends 1 2015/12/14 19:09:32;
tstp 1 2015/12/14 19:09:32;
cltt 1 2015/12/14 19:07:52;
binding state free;
hardware ethernet 00:1b:d5:e8:eb:93;
uid "\000cisco-001b.d5e8.eb93-A0001406128-PCIClientVPN-147\000";
}
lease 172.16.147.71 {
starts 1 2015/12/21 19:07:55;
ends 2 2015/12/22 05:08:20;
tstp 2 2015/12/22 05:08:20;
cltt 1 2015/12/21 19:07:55;
binding state free;
hardware ethernet 00:1b:d5:e8:eb:93;
uid "\000cisco-001b.d5e8.eb93-A0001406129-PCIClientVPN-147\000";
}
lease 172.16.147.131 {
starts 1 2016/02/08 16:00:43;
ends 1 2016/02/08 18:04:35;
tstp 1 2016/02/08 18:04:35;
cltt 1 2016/02/08 16:00:43;
binding state free;
hardware ethernet 00:1b:d5:e8:eb:93;
uid "\000cisco-001b.d5e8.eb93-PCIVWS0138-Trusted\000";
}
lease 172.17.10.76 {
starts 2 2015/09/01 20:52:14;
ends 3 2015/09/02 19:57:43;
tstp 3 2015/09/02 19:57:43;
cltt 2 2015/09/01 20:52:14;
binding state free;
hardware ethernet 00:26:18:23:d1:f6;
uid "\001\000&\030#\321\366";
}
lease 172.17.10.77 {
starts 1 2016/02/08 12:57:11;
ends 2 2016/02/09 12:57:11;
cltt 1 2016/02/08 12:57:11;
binding state active;
next binding state free;
hardware ethernet 00:50:56:9c:1a:1a;
client-hostname "ubuntu-1204-kln";
}
server-duid "\000\001\000\001\035x\310\335\000PV\220\327|";

lease 172.16.147.150 {
starts 1 2016/02/08 18:11:55;
ends 2 2016/02/09 18:11:55;
cltt 1 2016/02/08 18:11:55;
binding state active;
next binding state free;
hardware ethernet 00:1b:d5:e8:eb:93;
uid "\000cisco-001b.d5e8.eb93-PCIVWS0139-Trusted\000";
client-hostname "PCIVWS01";
}
lease 172.16.147.150 {
starts 1 2016/02/08 18:11:55;
ends 1 2016/02/08 18:20:58;
tstp 1 2016/02/08 18:20:58;
cltt 1 2016/02/08 18:11:55;
binding state free;
hardware ethernet 00:1b:d5:e8:eb:93;
uid "\000cisco-001b.d5e8.eb93-PCIVWS0139-Trusted\000";
}
lease 172.16.147.151 {
starts 1 2016/02/08 18:21:58;
ends 2 2016/02/09 18:21:58;
cltt 1 2016/02/08 18:21:58;
binding state active;
next binding state free;
hardware ethernet 00:1b:d5:e8:eb:93;
uid "\000cisco-001b.d5e8.eb93-PCIVWS0140-Trusted\000";
client-hostname "PCIVWS01";
}
root@lwydhcpndcp01:/var/lib/dhcp#

---------- Forwarded message ----------
From: Sten Carlsen <[hidden email]>
To: [hidden email]
Cc:
Date: Tue, 9 Feb 2016 17:14:22 +0100
Subject: Re: SUBJECT: Trying and failing to assign same IP address to a host
Would using ClientID be possible?

On 09/02/2016 16:42, David Elliott wrote:
Desired outcome: Assign same IP address to a VPN client by hostname every time.

Situation: The Cisco ASA VPN firewall does pass the hostname in the DHCP Discover, but does not provide the VPN client's MAC address (it provides the Cisco ASA MAC adress).

What happens: The PCIVWS01 client gets correct ip address 172.16.147.131 first time (and it is written in LEASES file). Second time the VPN client connected, it got DIFFERENT address: 172.16.147.105. Third time it got 172.16.147.151.

What I tried: I commented out the lease for 172.16.147.131 in the /var/lib/dhcp/dhcpd.leases fileand restarted dhcpd service, and the PCIVWS01 VPN client got 172.16.147.131 again!

What must I do so hostname PCIVWS01 always gets 172.16.147.131 ?

========= dhcpd.conf (with example comments removed)==================

ddns-update-style none;

# option definitions common to all supported networks...

option domain-name "lifeway.org";

option domain-name-servers 172.16.41.24, 172.16.41.32;

default-lease-time 86400;

max-lease-time 604800;

log-facility local7;

subnet 172.16.46.30 netmask 255.255.255.255 {

}

subnet 172.17.10.0 netmask 255.255.254.0 {

## dhcp start and end IP range ##

# Test SAND environment

authoritative;

range 172.17.10.76 172.17.10.199;

option subnet-mask 255.255.254.0;

option broadcast-address 172.17.10.255;

option routers 172.17.10.1;

host test-Elliott-Lenovo {

hardware ethernet 00:26:18:23:D1:F6;

fixed-address 172.17.10.100;

}

}

# Classes to specify Ridgecrest PCIClient VPN clients

class "PCIVRC01"{

match if substring (option host-name, 0,8)="PCIVRC01";

}

class "PCIVRC02"{

match if substring (option host-name, 0,8)="PCIVRC02";

}

class "PCIVRC03"{

match if substring (option host-name, 0,8)="PCIVRC03";

}

class "PCIVRC04"{

match if substring (option host-name, 0,8)="PCIVRC04";

}

class "PCIVRC05"{

match if substring (option host-name, 0,8)="PCIVRC05";

}

class "TESTRCC"{

match if substring (option host-name, 0,9)="A00014061";

}

class "PCIVRCXX"{

match if substring (option host-name, 0,6)="PCIVRC";

spawn with option host-name;

}

#

class "PCIVWS01"{

match if substring (option host-name, 0,8)="PCIVWS01";

}

class "PCIVWS02"{

match if substring (option host-name, 0,8)="PCIVWS02";

}

class "PCIVWS03"{

match if substring (option host-name, 0,8)="PCIVWS03";

}

class "PCIVWS04"{

match if substring (option host-name, 0,8)="PCIVWS04";

}

class "PCIVWS05"{

match if substring (option host-name, 0,8)="PCIVWS05";

}

#class "TESTWS"{

#match if substring (option host-name, 0,8)="A00014061";

#}

class "PCIVWSXX"{

match if substring (option host-name, 0,6)="PCIVWS";

spawn with option host-name;

}

subnet 172.16.147.0 netmask 255.255.255.0 {

# PCI VPN Client

authoritative;

#range 172.16.147.64 172.16.147.127;

option subnet-mask 255.255.255.0;

option broadcast-address 172.17.147.255;

option routers 172.16.147.50;

# Specifically named PCIVRC - Ridgecrest PCIVPN clients get these reserved addresses

pool {

allow members of "PCIVRC01";

range 172.16.147.51 172.16.147.51;

}

pool {

allow members of "PCIVRC02";

range 172.16.147.52 172.16.147.52;

}

pool {

allow members of "PCIVRC03";

range 172.16.147.53 172.16.147.53;

}

pool {

allow members of "PCIVRC04";

range 172.16.147.54 172.16.147.54;

}

pool {

allow members of "PCIVRC05";

range 172.16.147.55 172.16.147.55;

}

pool {

allow members of "TESTRCC";

range 172.16.147.63 172.16.147.63;

}

# Any PCIVRC - Ridgecrest PCIVPN clients get these addresses

pool {

allow members of "PCIVRCXX";

range 172.16.147.64 172.16.147.127;

}

# Specifically named PCIVWS - WordSearch PCIVPN clients get these reserved addresses

pool {

allow members of "PCIVWS01";

range 172.16.147.131 172.16.147.131;

}

pool {

allow members of "PCIVWS02";

range 172.16.147.132 172.16.147.132;

}

pool {

allow members of "PCIVWS03";

range 172.16.147.133 172.16.147.133;

}

pool {

allow members of "PCIVWS04";

range 172.16.147.134 172.16.147.134;

}

pool {

allow members of "PCIVWS05";

range 172.16.147.135 172.16.147.135;

}

# pool {

# allow members of "TESTWS";

# range 172.16.147.149 172.16.147.149;

# }

# Any PCIVWS - WordSearch PCIVPN clients get these addresses

pool {

allow members of "PCIVWSXX";

range 172.16.147.150 172.16.147.179;

}

}

=============LEASES============================

root@lwydhcpndcp01:/var/lib/dhcp# more dhcpd.leases

# The format of this file is documented in the dhcpd.leases(5) manual page.

# This lease file was written by isc-dhcp-4.1-ESV-R4

lease 172.16.147.63 {

starts 3 2016/02/03 12:16:57;

ends 3 2016/02/03 19:05:55;

tstp 3 2016/02/03 19:05:55;

cltt 3 2016/02/03 12:16:57;

binding state free;

hardware ethernet 00:1b:d5:e8:eb:93;

uid "\000cisco-001b.d5e8.eb93-A0001406137-Trusted\000";

}

lease 172.16.147.64 {

starts 3 2015/11/25 16:07:14;

ends 3 2015/11/25 16:09:14;

tstp 3 2015/11/25 16:09:14;

cltt 3 2015/11/25 16:07:14;

binding state free;

hardware ethernet 00:1b:d5:e8:eb:93;

uid "\000cisco-001b.d5e8.eb93-A000140612-Trusted\000";

client-hostname "A00014061";

}

lease 172.16.147.65 {

starts 1 2015/11/30 14:31:25;

ends 1 2015/11/30 14:33:25;

tstp 1 2015/11/30 14:33:25;

cltt 1 2015/11/30 14:31:25;

binding state free;

hardware ethernet 00:1b:d5:e8:eb:93;

uid "\000cisco-001b.d5e8.eb93-A000140613-Trusted\000";

client-hostname "A00014061";

}

lease 172.16.147.66 {

starts 1 2015/11/30 19:43:57;

ends 1 2015/11/30 19:45:57;

tstp 1 2015/11/30 19:45:57;

cltt 1 2015/11/30 19:43:57;

binding state free;

hardware ethernet 00:1b:d5:e8:eb:93;

uid "\000cisco-001b.d5e8.eb93-A0001406110-Trusted\000";

client-hostname "A00014061";

}

lease 172.16.147.67 {

starts 2 2015/12/01 22:23:21;

ends 2 2015/12/01 22:25:21;

tstp 2 2015/12/01 22:25:21;

cltt 2 2015/12/01 22:23:21;

binding state free;

hardware ethernet 00:1b:d5:e8:eb:93;

uid "\000cisco-001b.d5e8.eb93-A0001406125-Trusted\000";

client-hostname "A00014061";

}

lease 172.16.147.68 {

starts 1 2015/12/14 18:20:41;

ends 1 2015/12/14 18:47:04;

tstp 1 2015/12/14 18:47:04;

cltt 1 2015/12/14 18:20:41;

binding state free;

hardware ethernet 00:1b:d5:e8:eb:93;

uid "\000cisco-001b.d5e8.eb93-A0001406126-PCIClientVPN-147\000";

}

lease 172.16.147.69 {

starts 1 2015/12/14 18:47:55;

ends 1 2015/12/14 19:07:06;

tstp 1 2015/12/14 19:07:06;

cltt 1 2015/12/14 18:47:55;

binding state free;

hardware ethernet 00:1b:d5:e8:eb:93;

uid "\000cisco-001b.d5e8.eb93-A0001406127-PCIClientVPN-147\000";

}

lease 172.16.147.70 {

starts 1 2015/12/14 19:07:52;

ends 1 2015/12/14 19:09:32;

tstp 1 2015/12/14 19:09:32;

cltt 1 2015/12/14 19:07:52;

binding state free;

hardware ethernet 00:1b:d5:e8:eb:93;

uid "\000cisco-001b.d5e8.eb93-A0001406128-PCIClientVPN-147\000";

}

lease 172.16.147.71 {

starts 1 2015/12/21 19:07:55;

ends 2 2015/12/22 05:08:20;

tstp 2 2015/12/22 05:08:20;

cltt 1 2015/12/21 19:07:55;

binding state free;

hardware ethernet 00:1b:d5:e8:eb:93;

uid "\000cisco-001b.d5e8.eb93-A0001406129-PCIClientVPN-147\000";

}

lease 172.16.147.131 {

starts 1 2016/02/08 16:00:43;

ends 1 2016/02/08 18:04:35;

tstp 1 2016/02/08 18:04:35;

cltt 1 2016/02/08 16:00:43;

binding state free;

hardware ethernet 00:1b:d5:e8:eb:93;

uid "\000cisco-001b.d5e8.eb93-PCIVWS0138-Trusted\000";

}

lease 172.17.10.76 {

starts 2 2015/09/01 20:52:14;

ends 3 2015/09/02 19:57:43;

tstp 3 2015/09/02 19:57:43;

cltt 2 2015/09/01 20:52:14;

binding state free;

hardware ethernet 00:26:18:23:d1:f6;

uid "\001\000&\030#\321\366";

}

lease 172.17.10.77 {

starts 1 2016/02/08 12:57:11;

ends 2 2016/02/09 12:57:11;

cltt 1 2016/02/08 12:57:11;

binding state active;

next binding state free;

hardware ethernet 00:50:56:9c:1a:1a;

client-hostname "ubuntu-1204-kln";

}

server-duid "\000\001\000\001\035x\310\335\000PV\220\327|";

lease 172.16.147.150 {

starts 1 2016/02/08 18:11:55;

ends 2 2016/02/09 18:11:55;

cltt 1 2016/02/08 18:11:55;

binding state active;

next binding state free;

hardware ethernet 00:1b:d5:e8:eb:93;

uid "\000cisco-001b.d5e8.eb93-PCIVWS0139-Trusted\000";

client-hostname "PCIVWS01";

}

lease 172.16.147.150 {

starts 1 2016/02/08 18:11:55;

ends 1 2016/02/08 18:20:58;

tstp 1 2016/02/08 18:20:58;

cltt 1 2016/02/08 18:11:55;

binding state free;

hardware ethernet 00:1b:d5:e8:eb:93;

uid "\000cisco-001b.d5e8.eb93-PCIVWS0139-Trusted\000";

}

lease 172.16.147.151 {

starts 1 2016/02/08 18:21:58;

ends 2 2016/02/09 18:21:58;

cltt 1 2016/02/08 18:21:58;

binding state active;

next binding state free;

hardware ethernet 00:1b:d5:e8:eb:93;

uid "\000cisco-001b.d5e8.eb93-PCIVWS0140-Trusted\000";

client-hostname "PCIVWS01";

}

root@lwydhcpndcp01:/var/lib/dhcp#
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-- 
Best regards

Sten Carlsen

No improvements come from shouting:

       "MALE BOVINE MANURE!!!" 
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Klaus Vink Slott

Re: dhcp-users Digest, Vol 88, Issue 11

Hi

Just a brief note on you posting on the dhcp-users mailing list. Our
university uses some kind of Microsoft cloud service for spam filtering
and Your posting was caught as suspicious.

I have no knowledge on how MS filters work, but I would guess that
"miracles" followed with several ! is a trigger. You might want to
rephrase your tagline.

--
Regards
Klaus Vink Slott

HUMIT
University of Copenhagen

Den 10-02-2016 kl. 16:14 skrev David Elliott:
> Thanks Sten for the response.
> Client Id (option 61) is included in the DHCP Discover Packet and I
...

>
> -------------------------------------------------------------------------------------------------
> /God still works miracles!! We strive to provide you the best possible
> support./
> /If I have not provided you the excellent service you deserve, please
> contact my manager, Lynn Goolsby at [hidden email] or
> 615-277-5892 <tel:615-277-5892>/
>
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