Add IP forwarding config to archlinux guide
I had this small issue when following this guide on my Arch box, and I don't think it is specific to any configuration I have.
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@ -67,3 +67,21 @@ To start on system boot:
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sudo systemctl enable docker
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Network Configuration
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---------------------
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IPv4 packet forwarding is disabled by default on Arch, so internet access from inside
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the container may not work.
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To enable the forwarding, run as root on the host system:
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sysctl net.ipv4.ip_forward=1
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And, to make it persistent across reboots, enable it on the host's **/etc/sysctl.conf**:
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net.ipv4.ip_forward=1
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