My dhcp server is running amd64/4.3-stable, GENERIC kernel.
Clients on 192.168.250.0/23 use the "tftp-server-name" option. When
dhcpd starts, the first request from that subnet gets all parameters
correctly; all subsequent requests, whether from the same client or
other clients, receive all the supplied options correctly except the
tftp-server-name value; dhcpd either doesn't give the option or gives
the option value as null. Other options and the other subnets/ranges
work fine. Basically, dhcpd only gives out the tftp-server-name value
once, to the first customer.
I installed isc-dhcp-server-3.1.0 package to see if the problem
persisted. Using the identical (almost) dhcpd.conf below, everything
works fine with the ISC dhcpd. The only thing I added to dhcpd.conf
for isc-dhcp-server to work was the "ddns-update-style ad-hoc;"
parameter. Each subnet listed below corresponds to a separate physical
ethernet interface (no vlans, no IP aliases.)
---
#
# DHCP server options.
# See dhcpd.conf(5) and dhcpd(8) for more information.
#
authoritative;
ddns-update-style ad-hoc;
default-lease-time 86400;
max-lease-time 172800;
subnet 192.168.252.0 netmask 255.255.252.0 {
range 192.168.254.2 192.168.254.253;
option domain-name "playsecond.com";
option subnet-mask 255.255.252.0;
option routers 192.168.253.1;
option netbios-name-servers 192.168.252.15;
option netbios-node-type 8;
option ntp-servers 192.168.253.1;
option domain-name-servers 192.168.252.11, 192.168.252.12,
192.168.253.51,
192.168.253.54;
}
subnet 192.168.249.0 netmask 255.255.255.0 {
range 192.168.249.100 192.168.249.110;
option subnet-mask 255.255.255.0;
option routers 192.168.249.1;
option ntp-servers 66.42.62.246, 84.16.227.204, 149.156.24.40,
200.80.18.131
;
option domain-name-servers 198.144.192.4, 206.13.28.12;
}
subnet 192.168.250.0 netmask 255.255.254.0 {
range 192.168.250.25 192.168.251.253;
option subnet-mask 255.255.254.0;
option tftp-server-name "192.168.250.11";
option domain-name-servers 192.168.252.11, 192.168.252.12;
option routers 192.168.250.1;
option ntp-servers 192.168.250.1;
}
---
-Glenn
