I haven't used the specific patch, but I did see this bug report before one was committed and used the workaround described. I can verify that this workaround works:
--- lts.conf: ... # Enable NBD Swap and set correct port - see https://bugs.launchpad.net/ubuntu/+source/ltsp/+bug/235772 NBD_SWAP=Y NBD_PORT=9572
--- $ netstat -l|grep 9572 tcp 0 0 *:9572 *:* LISTEN lns@sequoiaubuntu:~$ telnet localhost 9572 Trying 127.0.0.1... Connected to localhost. Escape character is '^]'. NBDMAGICBS^[[3;5~^]quit
telnet> quit Connection closed.
I haven't used the specific patch, but I did see this bug report before one was committed and used the workaround described. I can verify that this workaround works:
--- /bugs.launchpad .net/ubuntu/ +source/ ltsp/+bug/ 235772
lts.conf:
...
# Enable NBD Swap and set correct port - see https:/
NBD_SWAP=Y
NBD_PORT=9572
--- tu:~$ telnet localhost 9572 S^ [[3;5~^ ]quit
$ netstat -l|grep 9572
tcp 0 0 *:9572 *:* LISTEN
lns@sequoiaubun
Trying 127.0.0.1...
Connected to localhost.
Escape character is '^]'.
NBDMAGICB
telnet> quit
Connection closed.