The MAC address is the same. I made screenshots and saved config before flashing to 21.02.1 and compared this too, as I just did not know where the problem could be.
Ok, will set it back to wan.
(Once I am on version 21.02.1 again. At the end of the night - yes I played with that most of the night - I flashed it back to 19.07, restored my backup and everything is working as before, along with my work laptop disconnection problem).
Hi there .. sorry it took a while, I flashed back version 19.07 and restored settings and it worked fine. Now back on 21.02.1. Below are ifconfig details for both versions.
Can you see any problems there? Many thanks!
ifconfig v19.07 (internet connection working)
br-lan Link encap:Ethernet HWaddr EC:41:XX:XX:XX:XX
inet addr:192.168.1.1 Bcast:192.168.1.255 Mask:255.255.255.0
inet6 addr: fe80::ee41:18ff:feec:1d5c/64 Scope:Link
inet6 addr: fdae:6f03:d9f1::1/60 Scope:Global
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:2217696 errors:0 dropped:0 overruns:0 frame:0
TX packets:5178974 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:620867122 (592.1 MiB) TX bytes:5328459664 (4.9 GiB)
eth0 Link encap:Ethernet HWaddr EC:41:XX:XX:XX:XX
inet6 addr: fe80::ee41:18ff:feec:1d5c/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:12295235 errors:405 dropped:3 overruns:0 frame:0
TX packets:4816941 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:6288698700 (5.8 GiB) TX bytes:3724145113 (3.4 GiB)
Interrupt:21
eth0.1 Link encap:Ethernet HWaddr EC:41:XX:XX:XX:XX
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:1134027 errors:0 dropped:70 overruns:0 frame:0
TX packets:2573152 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:207189094 (197.5 MiB) TX bytes:3040593955 (2.8 GiB)
eth0.2 Link encap:Ethernet HWaddr EC:41:XX:XX:XX:YY
inet addr:37.XXX.XXX.XXX Bcast:37.XXX.XXX.255 Mask:255.255.255.0
inet6 addr: 2a03:a900:501:0:ee41:18ff:feec:1d5d/64 Scope:Global
inet6 addr: fe80::ee41:18ff:feec:1d5d/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:11134357 errors:0 dropped:0 overruns:0 frame:0
TX packets:2142187 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:5859001345 (5.4 GiB) TX bytes:636796992 (607.2 MiB)
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:65536 Metric:1
RX packets:7737 errors:0 dropped:0 overruns:0 frame:0
TX packets:7737 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:774168 (756.0 KiB) TX bytes:774168 (756.0 KiB)
wlan0 Link encap:Ethernet HWaddr EC:41:XX:XX:XX:ZZ
inet6 addr: fe80::ee41:18ff:feec:1d5e/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:715119 errors:0 dropped:0 overruns:0 frame:0
TX packets:1342233 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:175070490 (166.9 MiB) TX bytes:898408028 (856.7 MiB)
wlan1 Link encap:Ethernet HWaddr EC:41:XX:XX:XX:AA
inet6 addr: fe80::ee41:18ff:feec:1d5f/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:547467 errors:0 dropped:0 overruns:0 frame:0
TX packets:1045116 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:268602654 (256.1 MiB) TX bytes:1484691949 (1.3 GiB)
ifconfig v21.02.1 (internet connection not working)
br-lan Link encap:Ethernet HWaddr EC:41:XX:XX:XX:XX
inet addr:192.168.1.1 Bcast:192.168.1.255 Mask:255.255.255.0
inet6 addr: fe80::ee41:18ff:feec:1d5c/64 Scope:Link
inet6 addr: fdff:ce41:b221::1/60 Scope:Global
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:12788 errors:0 dropped:0 overruns:0 frame:0
TX packets:8902 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:1401546 (1.3 MiB) TX bytes:2575572 (2.4 MiB)
eth0 Link encap:Ethernet HWaddr EC:41:XX:XX:XX:XX
inet6 addr: fe80::ee41:18ff:feec:1d5c/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1504 Metric:1
RX packets:9755 errors:0 dropped:0 overruns:0 frame:0
TX packets:11623 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:1294190 (1.2 MiB) TX bytes:3085762 (2.9 MiB)
Interrupt:21
lan1 Link encap:Ethernet HWaddr EC:41:XX:XX:XX:XX
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:6902 errors:0 dropped:3 overruns:0 frame:0
TX packets:6808 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:906573 (885.3 KiB) TX bytes:2457835 (2.3 MiB)
lan2 Link encap:Ethernet HWaddr EC:41:XX:XX:XX:XX
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:2853 errors:0 dropped:0 overruns:0 frame:0
TX packets:4527 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:212027 (207.0 KiB) TX bytes:505637 (493.7 KiB)
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:65536 Metric:1
RX packets:7752 errors:0 dropped:0 overruns:0 frame:0
TX packets:7752 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:716969 (700.1 KiB) TX bytes:716969 (700.1 KiB)
wan Link encap:Ethernet HWaddr EC:41:XX:XX:XX:YY
inet addr:37.XXX.XXX.XXX Bcast:37.XXX.XXX.255 Mask:255.255.255.0
inet6 addr: fe80::ee41:18ff:feec:1d5d/64 Scope:Link
UP BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:13 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 B) TX bytes:1376 (1.3 KiB)
wlan0 Link encap:Ethernet HWaddr EC:41:XX:XX:XX:ZZ
inet6 addr: fe80::ee41:18ff:feec:1d5e/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:962 errors:0 dropped:0 overruns:0 frame:0
TX packets:2164 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:101211 (98.8 KiB) TX bytes:345800 (337.6 KiB)
wlan1 Link encap:Ethernet HWaddr EC:41:XX:XX:XX:AA
inet6 addr: fe80::ee41:18ff:feec:1d5f/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:2961 errors:0 dropped:0 overruns:0 frame:0
TX packets:2074 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:316147 (308.7 KiB) TX bytes:322985 (315.4 KiB)
any advice, anyone? thx
You don't receive any packets on the wan interface. Call your ISP technical support to check if they "see" the device at Layer 2 (by MAC address).
Will do.
But it would be weird if they not, as the MAC address is the same in both versions, right?
It could be some difference in the ethernet signal strength in version 21.02. Do you have some unmanaged switch to connect between your ISP and the router?
I can assure you that the hardware is completely identical because I flashed the R3GV2's firmware on the 4AGE using a ch341a flash programmer. The device worked fine for the last 2 years but recently I broke openwrt when upgrading and that to run the tftp-restore-method: i did not work as the 4A's restore-image was not accepted.
I had to use the ch341a again to flash it and this time I flashed the 4a-image containing the bootloader, Bdata and so on: it was a perfectly fine working 4a again. This way you can also convert a chinese device to a EU/DE-device and the other way round.
Now comes the interesting part: you can interchange the bootloader by flashing mtd from a running openwrt after installing the kmod-mtd-rw and then using "mtd write file.bin partitionname".
This way I converted my second 4AGE running a R3Gv2-Image back to the 4A's bootloader.
Thx for the info, interesting!
I am still running the snapshot for R3v2 (19.07) as I was not able to get the version 21.02.1 working with my settings. The flash is successful, I can access it, change settings etc but having a static address there's no internet access, as per config for both versions above. Dunno what's wrong and how to fix it.
fwiw, is the WAN port using 100mb speed ?
https://openwrt.org/inbox/toh/xiaomi/xiaomi_mi_router_4a_gigabit_edition#mb_wan_port_negotiation_issues
Flashed v21.02.3 today, configured the wan and everything works .. finally 
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