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create code fences with backticks ` or tildes ~
```
like so
``` -
add language identifier to highlight code
```python
def function(foo):
print(foo)
``` - put returns between paragraphs
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iptablesis not blockingdhclint. If didn't get auto-configured ask your hosting provider forIP,Gatewayetc. Search online "How to configure network in CentOS 7" for e.g.