Well,

> sorry if I make mistake to put the line on configuration
> and just add like this seems not working https://pastebin.com/a1J2dhex

According to your config, this is incorrect way. The 'nitb' section
should be outside the 'network', for example:

https://pastebin.com/nQ0cy5pS

And thanks, I forgot to add this while writing the wiki... Will fix soon.