Firmware version RUTX_R_00.07.01.2
Firmware build date 2022-01-04 10:10:21
Modem firmware Version EG06ELAR04A04M4G
Kernel version 5.4.147
Interface WAN internet from modem Vodafone fiber FTTC (IP public)
Interface MOB1S1A1 internet SIM Vodafone (IP private)
DDNS freeddns.org (dynu.com)
DDNS UPDATE URL: http://api.dynu.com/nic/update?hostname=XXXXX.freeddns.org&password=XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
When only interface WAN is active all works fine and the IP updated is that of WAN (Vodafone fiber).
When only interface MOB1S1A1 is active the IP updated is that of SIM1 but this is private so it correctly cannot works. It is strange that in configuration DDNS, as you can see, there is Network: wan, but the IP update is that of MOB1S1A1….
When both interface WAN and MOB1S1A1 are active and work in Load Balancing, there is the PROBLEM!
The IP updated is casual from WAN or MOB1S1A1. When it is from WAN, it is OK but when it is from MOB1S1A1 it is a problem because IP is private and so cannot works.
I think that if Network is setting as wan, the updated IP must be that from wan. Is it a bug or have I not understand something?