Misunderstanding about the configuration of of znc

I love znc, A irc bouncer. Today, i introduce znc to younger colleague. Then i realized i was wrong to configure of znc.

When we $ znc --makeconf, it generates .znc/configs/znc.conf. It's something like this.

<User freenode>
    Pass = sha256#foobarfoobarfoobarfoobarfoobar
    Nick = banyan
...

    Server = irc.freenode.net 6667
</User>

<User bogus_user>
    Pass = sha256#foobarfoobarfoobarfoobarfoobar
    Nick = banyan
...

    Server = irc.somewhere.net 6667 raw_password
</User>

The section of Pass, we should use my (own) password, not the password of IRC server. How to generate it? use $ znc --makepass command. then paste it.

If irc server requires password, we should add raw password to Server section. Server = irc.somewhere.net 6667 raw_password

i didn't distinguish between these passwords so always was confused to configure it :S

Also we encountered this error message.

<*status> Cannot connect to IRC (Cannot assign requested address (Is your IRC server's host name valid?)). Retrying...

I wasn't sure, but this post helps me :)