MWAN3 routable loopback not working

Installing and Using OpenWrt
1

The routable loopback (self) function not working in version mwan3 2.0-3.

Model Xiaomi MiWiFi Mini
Firmware Version LEDE Reboot SNAPSHOT r3472

2

Do you really need to control connections originated from the router itself? I think that could be done even without that, are you doing an IoT project or something? if not here are my notes on MWAN3 just in case (works very well): https://gist.github.com/braian87b/97a186b2e11b5aa438d8fd17de0eab20

3

same device, openwrt, routable loopback did not work as suggested by arfett. i found it strange to have 2 loopback interfaces and stopped experimenting with it.

4

I really need it, but after adding, some websites cannot be opened. For example: https://www.cnblogs.com

root@LEDE-X64:~# curl -v https://www.cnblogs.com

  • Rebuilt URL to: https://www.cnblogs.com/
  • Trying 101.37.225.58...
  • TCP_NODELAY set
  • Connected to www.cnblogs.com (101.37.225.58) port 443 (#0)
  • ALPN, offering http/1.1
  • Cipher selection: ALL:!EXPORT:!EXPORT40:!EXPORT56:!aNULL:!LOW:!RC4:@STRENGTH
  • successfully set certificate verify locations:
  • CAfile: none
    CApath: /etc/ssl/certs
  • TLSv1.2 (OUT), TLS header, Certificate Status (22):
  • TLSv1.2 (OUT), TLS handshake, Client hello (1):

No more information....

config interface 'self'
option ifname 'lo'
option proto 'static'
option ipaddr '192.168.2.1'
option netmask '255.255.255.255'
option gateway '192.168.2.1'

config rule 'https'
option enable '1'
option dest_ip '0.0.0.0/0'
option dest_port '443'
option proto 'tcp'
option sticky '1'
option use_policy 'balanced'

5

I need it to route certain DNS traffic to WAN one and certain DNS traffic to WAN two. Without it all DNS traffic goes through either WAN one or two. I downgraded to an older version (1.6-2) for the time being and waiting for a mwan3 2.0 fix.

6

Please fix this in the next release of LEDE/OpenWRT. Because of the broken routable loopback interface if WAN1 goes down DNS goes down with it, since without the loopback interface by default everything from router gets routed through WAN1.

7

I'm not the developer, nor I have knowledge on the source code of the project or time to, so I could not help with a fix. Give a try on links on https://wiki.openwrt.org/doc/howto/mwan3 (github, etc) and in more than 60 pages of people that use mwan3 on the old forum too must someone that should be able to help: https://forum.openwrt.org/viewtopic.php?id=39052&p=65

Keep up posted on that if you get help.