bind9 的使用问题

[weixin_38051170]

The Original Question:
To setup BIND9's tool rndc on Solaris 2.8, I run the following command and
got the message:

# /usr/local/sbin/rndc-confgen
You must use the keyboard to create entropy, since your system is lacking
/dev/random (or equivalent)
start typing: [I started typing randomly]
........................................................
..............
[Ctrl+C]
rndc-confgen: generate key: out of entropy
# [System hanged]

Questions: What should I type? How many should I type? How to install /dev/random on Solaris 2.8? Any idea? Thank you in advance and ill summarize if get the solution!