Many udp ports open in bind 9.5.1

Before I had bind-9.5.0-P2 and now I upgrade to bind-9.5.1. I readed that in bind-9.5.1 is additional support for query port randomization including performance improvement and port range specification. But is this ok? netstat udp0 0 ls1.tel.net.ba:29825203.64.139.9:domain

Possible problems with bind-9.5.1

Hello, Before I had bind-9.5.0-P2 and now I upgrade to bind-9.5.1. I readed that in bind-9.5.1 is additional support for query port randomization including performance improvement and port range specification. But is this ok? netstat udp0 0 ls1.tel.net.ba:29825203.64