[ho1Aetoo]

@ddwarts

My R7800 has no problems with portforwarding.
Your linked tickets and threads are either invalid or fixed and have nothing to do with your problem.

https://forum.dd-wrt.com/phpBB2/viewtopic.php?p=1177111

this is e.g. carrier grade NAT and has nothing to do with the router or DD-WRT at all
This is solely due to the internet provider itself

[xraive]

Router Model / Version: Linksys EA8500
Previous Firmware: DD-WRT v3.0-r47033 std (07/08/21)
Current Firmware: DD-WRT v3.0-r47040 std (07/12/21)
File:: dd-wrt-webupgrade.bin / CLI Flash (easyddup.sh)
Kernel: Linux 4.9.274 #319 SMP Sat Jul 10 10:37:53 +07 2021 armv7l
Reset: No
Wireless: Wireless Mode - Client, Firmware Type - DD-WRT
Routing: Operating - Gateway
Setup: SFE, NTP, DDNS (inadyn-Entware),
Services: DNSMasq (GUI+ additional options on USB Syslog, SSH, FreeRadius, USB, ProFTPD (with users), Samba (with users), CoovaChilli (with local users & radius), WiFiDog,
Administration: Remote Access (HTTPS & SSH), Startup Script (For DNSMasq & inadyn)
Uptime: up 6 days, 17:16, load average: 0.00, 0.00, 0.00
Temperature: CPU 52.74 °C / wlan0 42 °C
Status: OK
Issues: See below for issues.

Router Model / Version: Netgear XR500
Previous Firmware: DD-WRT v3.0-r47033 std (07/08/21)
Current Firmware: DD-WRT v3.0-r47040 std (07/12/21)
File:: dd-wrt-webupgrade.bin /CLI Flash (easyddup.sh)
Kernel: Linux 4.9.274 #321 SMP Mon Jul 12 02:51:21 +07 2021 armv7l
Reset: No
Wireless: Wireless Mode - Client, Firmware Type - DD-WRT
Routing: Operating - Gateway
Setup: Basic Setup, NTP, Switch (VLANS and Trunk config using GUI)
Services: DNSMasq (GUI), Syslog, SSH, FreeRadius, USB,
Administration: Remote Access (HTTPS & SSH),
Uptime: p 6 days, 17:07, load average: 0.04, 0.20, 0.10

Temperature: CPU 56.905 °C / wlan0 45 °C
Status: OK
Issues: None


Issues:

Same issues as in the previous build, r47033. See my post here. https://forum.dd-wrt.com/phpBB2/viewtopic.php?p=1240790#1240790