客户端编译要麻烦些，需要有编译openwrt的ipk知识，自己先下载openwrt sdk的源码库，再更新package，保证有以下依赖的源码
libnetfilter-queue
进入openwrt sdk主目录
$ ./scripts/feeds update -a
$ ./scripts/feeds install libnetfilter-queue
$ pushd package
$ git clone https://github.com/RoyalAliceAcademyOfSciences/DeltaProxyGateway.git
$ popd
$ make menuconfig
选择：kmod-nfnetlink kmod-nfnetlink-queue libnfnetlink libnetfilter-queue libmnl DeltaProxyGateway
保存后，执行：
$ make V=99 package/DeltaProxyGateway/compile
生成的ipk在 sdk/bin/芯片/packages 里面，下载到目标机器上安装即可
$opkg install libmnl
Installing libmnl (1.0.1-1) to root...
Configuring libmnl.
opkg install libnetfilter-queue
Installing libnetfilter-queue (1.0.0-1) to root...
Installing libnfnetlink (1.0.0-2) to root...
Installing kmod-nfnetlink-queue (3.3.8-1) to root...
Installing kmod-nfnetlink (3.3.8-1) to root...
Configuring kmod-nfnetlink.
Configuring libnfnetlink.
Configuring kmod-nfnetlink-queue.
Configuring libnetfilter-queue.
opkg install DeltaProxyGateway
Installing DeltaProxyGateway to root...
Configuring DeltaProxyGateway.