Cheers!
I recently purchased the "Suncomm S06 Pro Max", essentially because it comes with the Quectel RM521F-GL modem.
The system out of the box is mediocre in order not to say pretty buggy, barebones and awful with that Mesh+ which seems to be some castrated and outdated OpenWrt/LEDE/whatever as it has been already pointed out here:
root@SE06_Pro:/# ubus call system board
{
"kernel": "4.4.60",
"hostname": "SE06_Pro",
"system": "ARMv7 Processor rev 4 (v7l)",
"model": "Qualcomm Technologies, Inc. IPQ5018/AP-MP03.5-C1",
"release": {
"distribution": "OpenWrt",
"version": "Chaos Calmer",
"revision": "2.9.0",
"codename": "chaos_calmer",
"target": "ipq/ipq50xx",
"description": "OpenWrt Chaos Calmer 15.05.1"
I'm currently fiddling with getting IPv6 running without that "NAT6" nonsense which results in ULA addresses with fd00... on the client side, but am failing so far although it at least works on Android to some extend (routable IPv6 connection according to websites, but slow response in applications, assumingly due to timeouts and fallbacks).
Since one has telnet access at least, what I did so far:
In /etc/config/dhcp I've added:
config dhcp 'wan6'
option interface 'wan26'
option ra 'relay'
option ndp 'relay'
option master '1'
option dhcpv6 'relay'
config dhcp 'lan'
option dhcpv6 'relay'
option ra 'relay'
option ndp 'relay'
as recommended. By doing so, clients take the /64 prefix from the ISP (who annoyingly doesn't provide any greater network part as usual for cellular networks) and add their host part. However, I have no IPv6 connectivity, neither Windows, MacOS or Linux. Only Android to some extent as mentioned (ipleak.net reports IPv6 connectivity).
According to the vague-at-best official documentation for OpenWRT, setting "everything" to "relay" should do it, however, reports like this one suggest that at least additional entries such as "extendprefix" are necessary. To me, it isn't clear in which file one has to make this setting (as an "option statement" I guess?), but I assumed /etc/config/network under either wan6 or wan26 in the case of the Suncomm. I tried both, but no change at all.
Has anyone gotten IPv6 successfully running in the sadly common /64 only - scenario with either the Chester Cheetah V2 or the Suncomm S06 (Pro Max)?