This memo documents existing usage for the "VoIP Configuration Server
Address Option" (previously known as the "TFTP Server IP Address
Option"). The option number currently in use is 150. This memo
documents the current usage of the option in agreement with
[RFC3942], which declares that any pre-existing usages of option
numbers in the range 128 - 223 should be documented and the working
group will try to officially assign those numbers to those options.
Working Group Summary
There was nothing controversial about this document.
It is believed that at least one DHCP server and client
implementation support the option specified in this document.
Further, it is believed that to some extent this
option is in use in some deployments of VoIP devices.
Review was was performed with key members of the dhc WG. No
special reviews were performed or required.
Shepherd: John Jason Brzozowski
AD: Jari Arkko
RFC Editor Note
Please change the title of the document as follows:
VoIP Configuration Server Address Option
VoIP Configuration Server Address Option for DHCPv4
Please add this to the end of the abstract:
The option is defined for DHCPv4 and works only with
Please change this in Section 5:
If this is a concern, then DHCP Authentication may be used.
If this is a concern, then DHCP Authentication may be used, but
even secure delivery of an address over DHCP does not protect
the subsequent insecure download over TFTP.