Default Samsung Galaxy Tab 2 p5110 and cyanogenmod 11 problem

i installed cyanogenmod 11 nightly latest version on my galaxy tab 2 p5110 and it doesnt find my WLAN. Every other WLAN in the house here it gets, but my own one (DLINK 615 router) not. On my mobile device i can find it and loggin in, so my WLAN is working fine.
Any solutions? Is this a ROM bug or could it be something else?
thanks for your help