DHCP Internet / WAN greyed out

[rconsole]

Since version 1.5.9 and 1.5.10 the release now button is greyed out when I select DHCP (wired).

I don't get any IP address from my isp.
When I revert to 1.5.8 or older everything works fine.

I use a Netgear WNDR3700 v1 router