Router Advertisement Daemon wont start if >2 IPv6 DNS servers are specified

[CloudHoppingFlowerChild]

Crammed it all into the title. Don't know how it was before 17.1.8 (probably because I didn't have room to try) but if more than two IPv6 DNS servers are specified in System: Settings: General then radvd won't start. Works fine with two IPv6 DNS servers and as many as four IPv4 DNS servers. Haven't tried with more than that but with three or four IPv6 DNS servers, regardless of how many IPv4 servers specified down to zero, it would not work. Didn't try with any more than four IPv6 DNS servers.

Maybe this is a know design limitation of the component, not sure, but I didn't come across anything related when I searched the forum.