I surely know that difference and that caused my

question. Read my original post word by word, from the title I used a questioning sense and a question mark.

The PCs don't connect to the Internet, which is not so supprising to me, but the phone works. It is not just you who can think of "当ip电话插上的时候可以用，因为它先获得了地址，但当电脑再接上去的时候，就无法得到地址了". Nope, I have tried the other order as well. So maybe you should do something before post anything.

"谁都是从不会到会的。"
Apparently you need to learn more.

"但问题是，你应该先自己找一下答案。也许我的这个结论过于武断，在你上面的帖子中，我看不出你有努力过的迹象。"
Don't judge others so easily and don't tell others what they "应该". 你看不出我有努力过的迹象 is your problem. Still, if you know 你的结论过于武断, why not say sorry?

And you have read 充数's post, good -- that is why I say there are lots of smart people but no one likes an aXX.