Hi, folks.
I've tried to make a GRE Tunnel (IPv4 over IPv6) between Huawei Routers such as NE8000 / NE40 or NE20, its doesn't matter which is it or which firmware it runs, it won't work. You can't ping the remote endpoints, neither the endpoints could ping VYOS.
I'm not sure what causes this, it seems to be some padding or something else happening with the packets causing the communication to not work as expected.
This test was using 1.3 and 1.4 builds as well.
In case someone wanna test this, we can help with remote access.