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I get an IPv6 address from EE4G quite nicely, however no clients on the LAN can use IPv6.  Does anyone have an example config where this works?

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Hello,

Could you elaborate on your use case? Does the router mobile interface obtain an IPv6 address? Do you want to bridge/passthrough this IP to another device in LAN?

Regards.
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I have a RUTX12 as main main router.  It has dual SIM cards, one from EE and one from Vodafone.  The EE SIM supports IPv4 and IPv6 and obtains an IP address 2a01:4c8:468:xxxx:xxxx:xxxx:xxxx:xxxx/64 reliably.  The LAN shows an IP address 2a01:4c8:468:XXXX::1/64  which looks like it derives from the EE SIM.  A PC connected to the LAN gets allocated an IPv6 address of 2a01:4c8:468:9d5d::821(Preferred) so it looks as if that is all working.  However if the PC attempts to connect to any IPv6 external address, it looks like there is no route.

The PC IPv6 default gateway is fe80::21e:42ff:fe36:a521%12 and the router has an IPv6 address of     inet6 fe80::21e:42ff:fe36:a521/64 scope link.  

The router routing table for IPv6 looks like:

default from 2a01:4c8:468:9d5d::/64 via fe80::d83e:1ee1:9df4:e02b dev qmimux8 proto static metric 512 pref medium

2a01:4c8:468:9d5d::/64 dev br-lan proto static metric 1 pref medium

unreachable 2a01:4c8:468:9d5d::/64 dev lo proto static metric 2147483647 error 4294967183 pref medium

fd76:1731:c0c3::/64 dev br-lan proto static metric 1 pref medium

unreachable fd76:1731:c0c3::/48 dev lo proto static metric 2147483647 error 4294967183 pref medium

fe80::/64 dev br-lan proto kernel metric 256 pref medium

fe80::/64 dev wwan1 proto kernel metric 256 pref medium

fe80::/64 dev qmimux9 proto kernel metric 256 pref medium

fe80::/64 dev wwan0 proto kernel metric 256 pref medium

fe80::/64 dev qmimux8 proto kernel metric 256 pref medium

fe80::/64 dev tun0 proto kernel metric 256 pref medium

local ::1 dev lo table local proto kernel metric 0 pref medium

anycast 2a01:4c8:468:9d5d:: dev qmimux8 table local proto kernel metric 0 pref medium

anycast 2a01:4c8:468:9d5d:: dev br-lan table local proto kernel metric 0 pref medium

local 2a01:4c8:468:9d5d::1 dev br-lan table local proto kernel metric 0 pref medium

local 2a01:4c8:468:9d5d:439d:4d52:3e83:f338 dev qmimux8 table local proto kernel metric 0 pref medium

anycast fd76:1731:c0c3:: dev br-lan table local proto kernel metric 0 pref medium

local fd76:1731:c0c3::1 dev br-lan table local proto kernel metric 0 pref medium

anycast fe80:: dev br-lan table local proto kernel metric 0 pref medium

anycast fe80:: dev wwan1 table local proto kernel metric 0 pref medium

anycast fe80:: dev qmimux9 table local proto kernel metric 0 pref medium

anycast fe80:: dev wwan0 table local proto kernel metric 0 pref medium

anycast fe80:: dev qmimux8 table local proto kernel metric 0 pref medium

anycast fe80:: dev tun0 table local proto kernel metric 0 pref medium

local fe80::21e:42ff:fe36:a521 dev br-lan table local proto kernel metric 0 pref medium

local fe80::1410:366c:bc0f:9ee9 dev qmimux9 table local proto kernel metric 0 pref medium

local fe80::439d:4d52:3e83:f338 dev qmimux8 table local proto kernel metric 0 pref medium

local fe80::4942:5957:4ef6:7dd6 dev wwan0 table local proto kernel metric 0 pref medium

local fe80::4a45:77ec:50c:e01c dev wwan1 table local proto kernel metric 0 pref medium

local fe80::a51e:adf9:71af:b0dc dev tun0 table local proto kernel metric 0 pref medium

ff00::/8 dev br-lan table local proto kernel metric 256 pref medium

ff00::/8 dev wwan1 table local proto kernel metric 256 pref medium

ff00::/8 dev qmimux9 table local proto kernel metric 256 pref medium

ff00::/8 dev wwan0 table local proto kernel metric 256 pref medium

ff00::/8 dev qmimux8 table local proto kernel metric 256 pref medium

ff00::/8 dev tun0 table local proto kernel metric 256 pref medium

But I am still unable to connect from the PC to any external IP address.

If I ping Google IPv6 DNS from the Router it works:

PING 2001:4860:4860::8888 (2001:4860:4860::8888): 56 data bytes

64 bytes from 2001:4860:4860::8888: seq=0 ttl=114 time=25.627 ms

64 bytes from 2001:4860:4860::8888: seq=1 ttl=114 time=23.778 ms

64 bytes from 2001:4860:4860::8888: seq=2 ttl=114 time=27.551 ms

64 bytes from 2001:4860:4860::8888: seq=3 ttl=114 time=23.555 ms

64 bytes from 2001:4860:4860::8888: seq=4 ttl=114 time=23.430 ms


--- 2001:4860:4860::8888 ping statistics ---

5 packets transmitted, 5 packets received, 0% packet loss

round-trip min/avg/max = 23.430/24.788/27.551 ms

But not from the PC:

Pinging 2001:4860:4860::8888 with 32 bytes of data:

Destination net unreachable.

Destination net unreachable.

Destination net unreachable.

My guess is there is a route or firewall rule missing in the Router, but only a guess.

  

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I have the same issue, IPv6 from the router (RUTX11 07.00) is fine but not from any device on the lan.

The default route is probably wrong:

default from 2a01:4c8:468:9d5d::/64 via fe80::d83e:1ee1:9df4:e02b dev qmimux8 proto static metric 512 pref medium

I guess the fe80::d83e:1ee1:9df4:e02b target is inexistant and cannot be changed.

Same SIM works fine in a Huawei B525.

Regards,