Double NAT occurs when traffic passes through two address-translating routers. It can complicate inbound connectivity and discovery, but ordinary outbound HTTP streaming can work through it. Do not dismantle the network solely because two routers are present.
Map the equipment
Identify the internet-provider gateway and any additional router. A mesh unit may already operate in access-point mode, so appearance alone does not establish double NAT. Read the actual operating mode in each device's management interface.
Match the fix to the symptom
If a local casting or inbound service fails, network topology deserves attention. Repeated video stalls may instead involve wireless backhaul, congestion or the source. A wired comparison helps avoid blaming address translation for an unrelated capacity problem.
Change modes with care
Bridge and access-point modes alter routing, DHCP and sometimes telephone or provider services. Follow both vendors' instructions and keep a way to restore the previous setup. Do not disable the only working DHCP server by accident.
