GL-X750 dual stack is not working

Technical Support for Routers 4G LTE, 5G NR, USB modems
1

Whenever I configure the router to disable IPv6 and go IPv4 only, the router works as expected, and obtains an IPv4 address from my ISP, but when I enable IPv6 (in the GL-iNet router frontpage) the router will obtain an IPv6 address and leave the IPv4 address section blank. The router then distributes the v6 addresses to its LAN client I cannot use them to connect, however the routers IPv6 address does connect to the internet (I can ping -6 one.one.one.one)

2

Hi , Can you tell me the firmware version and the ipv6 config? what is your lan mode and wan interface

3

OpenWrt 19.07

uci show network:

network.loopback=interface
network.loopback.ifname='lo'
network.loopback.proto='static'
network.loopback.ipaddr='127.0.0.1'
network.loopback.netmask='255.0.0.0'
network.globals=globals
network.globals.ula_prefix='fd2e:021e:aa24::/48'
network.lan=interface
network.lan.type='bridge'
network.lan.ifname='eth1'
network.lan.proto='static'
network.lan.netmask='255.255.255.0'
network.lan.hostname='GL-X750-002'
network.lan.ipaddr='192.168.8.1'
network.lan.ip6assign='64'
network.lan.ip6hint='0000'
network.lan.ip6ifaceid='::1'
network.wan=interface
network.wan.ifname='eth0'
network.wan.proto='dhcp'
network.wan.hostname='GL-X750-002'
network.wan.macaddr='F0:D0:8C:A0:E9:9E'
network.wan6=interface
network.wan6.proto='dhcpv6'
network.wan6.ifname='@modem_1_1_2'
network.wan6.disabled='1'
network.guest=interface
network.guest.ifname='guest'
network.guest.type='bridge'
network.guest.proto='static'
network.guest.ipaddr='192.168.9.1'
network.guest.netmask='255.255.255.0'
network.guest.ip6assign='60'
network.modem_1_1_2=interface
network.modem_1_1_2.ifname='3g-modem'
network.modem_1_1_2.service='umts'
network.modem_1_1_2.apn='everywhere'
network.modem_1_1_2.proto='3g'
network.modem_1_1_2.device='/dev/ttyUSB3'
network.modem_1_1_2.node='1-1.2:1.3'
network.modem_1_1_2.dialnumber='*99#'
network.modem_1_1_2.username='eesecure'
network.modem_1_1_2.password='secure'
network.modem_1_1_2.auth='NONE'
network.modem_1_1_2.metric='40'
network.modem_1_1_2.disabled='0'

sorry I took so long to respond I have been really busy

4

The native mode in glinet sdk3.x uses the form of relay to obtain ip, which may have certain compatibility.

Does nat6 fit your needs?

Or you can try using the native mode in shapshot v4.3.2.
https://dl.gl-inet.com/?model=x750&type=snapshot