I have issue (target x86-64) with EG25 modem in QMI mode, internet did not works in LAN (DNS did not resolve and IPs can't ping), but in SSH command line of OpenWRT i can access internet (ping 8.8.8.8, even opkg update works and i can install all packages thru QMI and download files without any problems).
Have try different configurations with firewall and builds of OpenWrt (stable 18.06.2, current branch with kernel 4.14/4.19), and sometimes occasionally it can works but not so long (about 2-3 min) and than themselves stop working (in ssh of OpenWrt ping to 8.8.8.8 didn't lose, but internet just stop working in LAN).
All that i need to pass thru VLAN OpenWrt USB 4G connection to other firewall (pfSense) as WAN connection, how i can make it? Best if it will pass without any firewall - directly to pfSense WAN, but i don't know how to do this...
Please, help to resolve this issue, case at now a couple of days i have no idea how to make it works.
If you have static IP and manual DNS for your PC, can you access internet or ping 8.8.8.8 form PC? This will tell if it's a matter of DHCP/DNS or firewall.
Also, could you post the output of the following commands form SSH. You may mask out your MAC and public IP addresses. Use Pre-formatted text tool to share the code here. (paste the code, highlight it, and click </> in the tool bar or press Ctrl + Shift + C).
I have try with 8.8.8.8 in DNS for computer in that LAN, but no success.
I have try make classic 3G connection, it have UP and all works excellent in OpenWrt SSH/opkg/wget and etc., but did not work at all in LAN network PCs, that clear now - there is not issue with QMI, i have no idea, what is point of problem.
I have make "factory defaults", than just setup QMI, and same troubles, but i can make tracert in LAN PC:
C:\tracert google.com.ua
Π’ΡΠ°ΡΡΠΈΡΠΎΠ²ΠΊΠ° ΠΌΠ°ΡΡΡΡΡΠ° ΠΊ google.com.ua [172.217.16.35]
Ρ ΠΌΠ°ΠΊΡΠΈΠΌΠ°Π»ΡΠ½ΡΠΌ ΡΠΈΡΠ»ΠΎΠΌ ΠΏΡΡΠΆΠΊΠΎΠ² 30:
1 <1 ΠΌΡ <1 ΠΌΡ <1 ΠΌΡ OpenWrt.lan [192.168.1.1]
2 * * * ΠΡΠ΅Π²ΡΡΠ΅Π½ ΠΈΠ½ΡΠ΅ΡΠ²Π°Π» ΠΎΠΆΠΈΠ΄Π°Π½ΠΈΡ Π΄Π»Ρ Π·Π°ΠΏΡΠΎΡΠ°.
3 80 ms 60 ms 56 ms 88-214-103-129.vf-ua.net [88.214.103.129]
4 49 ms 59 ms 68 ms 88-214-102-216.vf-ua.net [88.214.102.216]
5 96 ms 48 ms 44 ms 172.17.10.1
6 97 ms 67 ms 57 ms 88.214.120.1
7 76 ms 57 ms 57 ms 88.214.120.2
8 102 ms 67 ms 75 ms 108.170.248.147
9 91 ms 77 ms 82 ms 209.85.248.105
10 102 ms 68 ms 78 ms 209.85.251.188
11 110 ms 71 ms 69 ms 108.170.250.209
12 98 ms 72 ms 72 ms 216.239.41.133
13 91 ms 69 ms 67 ms muc03s08-in-f35.1e100.net [172.217.16.35]
Π’ΡΠ°ΡΡΠΈΡΠΎΠ²ΠΊΠ° Π·Π°Π²Π΅ΡΡΠ΅Π½Π°.
Did you also put a static IP address for you PC (10.0.0.11 for example) when you tried? Or is it the same computer from which you can access the router by SSH, so you know that the PC gets proper IP?
Did you edit /etc/config/network? I find the following a bit strange, but then again I'm not familiar with your router so I can't know for sure.
Π’ΡΠ°ΡΡΠΈΡΠΎΠ²ΠΊΠ° ΠΌΠ°ΡΡΡΡΡΠ° ΠΊ google.com.ua [216.58.215.99]
Ρ ΠΌΠ°ΠΊΡΠΈΠΌΠ°Π»ΡΠ½ΡΠΌ ΡΠΈΡΠ»ΠΎΠΌ ΠΏΡΡΠΆΠΊΠΎΠ² 30:
1 <1 ΠΌΡ <1 ΠΌΡ <1 ΠΌΡ OpenWrt.lan [192.168.1.1]
2 * * * ΠΡΠ΅Π²ΡΡΠ΅Π½ ΠΈΠ½ΡΠ΅ΡΠ²Π°Π» ΠΎΠΆΠΈΠ΄Π°Π½ΠΈΡ Π΄Π»Ρ Π·Π°ΠΏΡΠΎΡΠ°.
3 78 ms 70 ms 58 ms 88-214-103-193.vf-ua.net [88.214.103.193]
4 57 ms 59 ms 59 ms 88-214-102-216.vf-ua.net [88.214.102.216]
5 82 ms 59 ms 46 ms 172.17.10.1
6 72 ms 55 ms 70 ms 88.214.120.1
7 78 ms 59 ms 54 ms 88.214.120.2
8 93 ms 58 ms 68 ms 108.170.248.147
9 89 ms 67 ms 64 ms 209.85.248.105
10 107 ms 70 ms 67 ms 108.170.250.193
11 93 ms 70 ms 66 ms 108.170.234.245
12 84 ms 65 ms 65 ms waw02s17-in-f3.1e100.net [216.58.215.99]
Π’ΡΠ°ΡΡΠΈΡΠΎΠ²ΠΊΠ° Π·Π°Π²Π΅ΡΡΠ΅Π½Π°.
It was problem in LTE operator (Vodafone), i have change SIM to another LTE operator (Kyivstar) and problem is gone. It's very unclear to understand cause of problem with operators for OpenWrt firewall.
I have totally resolve issue with Vodafone operator, they magically "blocking" traffic for more than one PC, so - if it in OpenWrt, all PCs behind NAT is blocked by operator. I did not know how they do it, is there any solution to avoid this blocking?