====== OpenWRT ======

===== Image download =====
  - https://downloads.openwrt.org/releases/19.07.4/targets/x86/64/
  - https://downloads.openwrt.org/releases/19.07.4/targets/x86/64/openwrt-19.07.4-x86-64-combined-squashfs.img.gz


==== Unzip ====
  gzip -d openwrt-19.07.4-x86-64-combined-squashfs.img.gz
  
===== Update network config =====
After install the image in the VMM, need to update the network config(/etc/config/network)
  - gateway
  - dns

<code>
config interface 'lan'
	option type 'bridge'
	option ifname 'eth0'
	option proto 'static'
	option ipaddr '192.168.2.1'
	option netmask '255.255.255.0'
	option ip6assign '60'
	option multipath 'on'
	option gateway '192.168.1.1'
	list dns '8.8.8.8'

config interface 'wan'
        option ifname 'eth1'
	option proto 'dhcp'

</code>

===== Install luci =====
  - https://openwrt.org/docs/guide-user/luci/luci.essentials

  opkg update
  opkg install luci

===== Install tools =====
```
opkg install curl unzip wget-ssl ipset

```

===== Install v2ray =====
Download the v2ray from
  - https://github.com/v2ray/v2ray-core/releases
I use my VPS to download it first
  wget https://ef.pjq.me/download/openwrt/v2ray-linux-64.zip
  unzip v2ray-linux-64.zip -d v2ray



===== Install BBR =====

  opkg install kmod-tcp-bbr
  insmod kmod-tcp-bbr
  lsmod|grep bbr

  vim /etc/sysctl.conf
And add the following:
  net.core.default_qdisc=fq_codel
  net.ipv4.tcp_congestion_control=bbr

Then reload the setting
  sysctl -p

<code>
lsmod|grep bbr
tcp_bbr                16384 35 
</code>


===== Update hosts =====
  vim /etc/config/dhcp

Add the `list addnhosts '/etc/myhosts'`
<code>
config dnsmasq                                                                                                     ...                                                                                           
        list addnhosts '/etc/myhosts'    
</code>
Then add your hosts to /etc/myhosts
  vim /etc/myhosts
  
Then restart the dnsmasq service
  /etc/init.d/dnsmasq restart

===== eth0/lan doesn't work =====


The network eth0 doesn't work, and saw the log
  device eth0 entered promiscuous mode
After google, I try to disable promiscuous mode.
ifconfig eth0 -promisc

  - https://help.aliyun.com/document_detail/41541.html
  - https://ieevee.com/tech/2016/11/24/promisc.html