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## Prerequisites
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This instructions explain how to build an OpenWRT .ipk package for n2n.
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Before going on, it is required to have a working cross-compiling build
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environment for the OpenWRT version installed into your device. This usually
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comes down to the following steps:
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1. Download and extract the SDK toolchain for your device. The toolchain
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must match the *exact* OpenWRT version installed in your device. Toolchain
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for official OpenWRT images can be downloaded from https://downloads.openwrt.org
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2. Build the toolchain: run `make menuconfig`, save the configuration, then
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run `make` to build the cross compiling tools
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3. Download the feeds with `./scripts/feeds update -a`
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## Compilation
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From the OpenWRT build directory:
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```
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git clone https://github.com/ntop/n2n n2n
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cp -r n2n/packages/openwrt package/n2n
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make menuconfig # select Network -> VPN -> n2n-edge and n2n-supernode
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make package/n2n/compile V=s
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```
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If everything went fine, two ipk will be generated, one for the n2n-edge
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and the other for n2n-supernode. They can be found with `find . -name "n2n*.ipk"`,
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copied to the target device, and installed with `opkg install`.
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## Configuration
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The edge node can be started with `/etc/init.d/edge start`.
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Its configuration file is `/etc/n2n/edge.conf`.
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The supernode can be started with `/etc/init.d/supernode start`.
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Its configuration file is `/etc/n2n/supernode.conf`.
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