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en:bpi-r2:hwnat [2019/01/09 18:04]
en:bpi-r2:hwnat [2020/08/29 17:14] (current)
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 +====== Hardware-NAT ======
  
 +  * available in LEDE [[http://forum.banana-pi.org/t/bpi-r2-lede-source-code-for-hardware-nat/3940|forum]]
 +  * seems to work with 4.14, Test: https://github.com/frank-w/BPI-R2-4.14/tree/4.14-hnat [[http://forum.banana-pi.org/t/bpi-r2-kernel-4-14-hnat/4486/43|forum]]
 +  * no support in 4.4.70 [[http://forum.banana-pi.org/t/bpi-r2-lede-source-code-for-hardware-nat/3940/15|forum]]
 +
 +Current implementation works only between lan and wan (not wifi or other interfaces)
 +
 +at least you have to setup nat on wan:
 +<code>
 +ipt=/sbin/iptables
 +if_wan=wan
 +${ipt} -t nat -F
 +${ipt} -t nat -A POSTROUTING -o ${if_wan} -j MASQUERADE
 +</code>
 +
 +and load hnat-module:
 +
 +  modprobe mtkhnat
 +
 +Check if it is working with
 +<code>
 +#via debugfs (working shows BIND-state)
 +cat /sys/kernel/debug/hnat/all_entry
 +#via interrupts (counter does not increase after a while (download))
 +cat /proc/interrupts | grep 'ethernet'
 +</code>
 +
 +[[https://github.com/garywangcn/bpi-r2_lede/commit/ef3ced07e505b40e04724f257dffea9c4d388fca#diff-c6d162794f4d9c3773b8a3ef2375785b|original-Patch for 4.9 (lede)]]