Misc error code 21000

[WiiHateErrors]

i changed my WPA to WEP on my network setting, then try to connect my DS to my wifi with the correct WEP key but i got that hope-erasing message, whats wrong with my router ?? i use belkin

 

[Ryupower]

do you have OTHER security on the router
like MAC address filtering

 

[Deleted-236924]

Set everything up manually.