I found a non-functional link on
http://www.twinsun.com/tz/tz-link.htm
A Timezone Option for
DHCP
proposes a
DHCP
option for a server to configure a client's time zone and daylight saving settings automatically
"Timezone Options for DHCP" is no longer a draft but a RFC (
http://www.ietf.org/rfc/rfc4833.txt
).
All the best
Johnny