Update prerequisites.md

Add a new line after COMMIT to avoid "Bad argument" error.
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WarWolf 2023-09-04 00:22:23 +08:00 committed by GitHub
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@ -62,7 +62,7 @@ First, install iptables-persistent. During installation it will ask you if you w
apt install -y iptables-persistent
```
Edit `/etc/iptables/rules.v4` and put this inside:
Edit `/etc/iptables/rules.v4` and put this inside: (There must to be a new line after COMMIT, or it will get an error message ```Bad argument `COMMIT'``` at next step.)
```text
*filter
@ -99,6 +99,7 @@ Edit `/etc/iptables/rules.v4` and put this inside:
-A FORWARD -j REJECT
COMMIT
```
With iptables-persistent, that configuration will be loaded at boot time. But since we are not rebooting right now, we need to load it manually for the first time:
@ -140,6 +141,7 @@ If your server is also reachable over IPv6, edit `/etc/iptables/rules.v6` and ad
-A FORWARD -j REJECT
COMMIT
```
Similar to the IPv4 rules, you can load it manually like this:
```bash