Hello. I have a 532a w/ 564 running 2.9.33 with a bridge interface including a wlan card and several ethernet ports. I assigned dhcp servers, ip addresses, and pools to the dhcp servers and everything was working fine. I get a call from the boss man this morning; nobody is online. I show up and look at the ip - dhcp server menu, and they are all red with a ! next to them and show ‘invalid’ in winbox. I removed the existing dhcp servers, and put them back in with the same settings, and everything worked fine. Why would the dhcp servers just stop working?
It does appear the issue is resolved for right now by upgrading to 2.9.39.