ok got it:
root@bt:~# apt-cache search ^tftp
tftpbruteforce - TFTP filename bruteforcer
tftp-hpa - HPA's tftp client
tftpd-hpa - HPA's tftp server
tftpd - Trivial file transfer protocol server
tftp - Trivial file transfer protocol client
source-tftpbruteforce - TFTP filename bruteforcer
root@bt:~# apt-get install tftp-hpa
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following NEW packages will be installed:
tftp-hpa
0 upgraded, 1 newly installed, 0 to remove and 6 not upgraded.
Need to get 26.7kB of archives.
After this operation, 90.1kB of additional disk space will be used.
Get:1
http://32.repository.backtrack-linux.org/ revolution/main tftp-hpa 5.0-11ubuntu2.1 [26.7kB]
Fetched 26.7kB in 3s (8,737B/s)
Selecting previously deselected package tftp-hpa.
(Reading database ... 232285 files and directories currently installed.)
Unpacking tftp-hpa (from .../tftp-hpa_5.0-11ubuntu2.1_i386.deb) ...
Processing triggers for man-db ...
Setting up tftp-hpa (5.0-11ubuntu2.1) ...
root@bt:~# netstat -anup
Active Internet connections (servers and established)
Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name
udp 0 0 0.0.0.0:68 0.0.0.0:* 19792/dhclient3
udp 0 0 0.0.0.0:69 0.0.0.0:* 22152/atftpd
udp6 0 0 ::1:55651 ::1:55651 ESTABLISHED 1145/postgres
root@bt:/etc/init.d# tftp 172.0.0.1
tftp> quit
root@bt:/etc/init.d# ^C
root@bt:/etc/init.d#