Revert "TS-3237: Don't segregate DNS results by port."
Revert "TS-3237: Don't segregate DNS results by port."

Fixes: TS-3720

SolidWallOfCode/trafficserver,chenglongwei/trafficserver,chenglongwei/trafficserver,chitianhao/trafficserver,rahmalik/trafficserver,davidbz/trafficserver,rpufky/trafficserver,persiaAziz/trafficserver,SolidWallOfCode/trafficserver,dyrock/trafficserver,taoyunxing/trafficserver,rpufky/trafficserver,reveller/trafficserver,chenglongwei/trafficserver,bryancall/trafficserver,clearswift/trafficserver,davidbz/trafficserver,taoyunxing/trafficserver,pbchou/trafficserver,persiaAziz/trafficserver,duke8253/trafficserver,rpufky/trafficserver,PSUdaemon/trafficserver,vmamidi/trafficserver,persiaAziz/trafficserver,vmamidi/trafficserver,chenglongwei/trafficserver,dyrock/trafficserver,duke8253/trafficserver,dyrock/trafficserver,pbchou/trafficserver,PSUdaemon/trafficserver,clearswift/trafficserver,bryancall/trafficserver,PSUdaemon/trafficserver,clearswift/trafficserver,chenglongwei/trafficserver,chitianhao/trafficserver,PSUdaemon/trafficserver,chitianhao/trafficserver,chenglongwei/trafficserver,duke8253/trafficserver,reveller/trafficserver,rpufky/trafficserver,PSUdaemon/trafficserver,chitianhao/trafficserver,reveller/trafficserver,duke8253/trafficserver,PSUdaemon/trafficserver,rahmalik/trafficserver,vmamidi/trafficserver,pbchou/trafficserver,bryancall/trafficserver,SolidWallOfCode/trafficserver,rpufky/trafficserver,SolidWallOfCode/trafficserver,reveller/trafficserver,SolidWallOfCode/trafficserver,rahmalik/trafficserver,rahmalik/trafficserver,chenglongwei/trafficserver,rpufky/trafficserver,vmamidi/trafficserver,davidbz/trafficserver,rahmalik/trafficserver,taoyunxing/trafficserver,davidbz/trafficserver,dyrock/trafficserver,persiaAziz/trafficserver,PSUdaemon/trafficserver,dyrock/trafficserver,dyrock/trafficserver,chitianhao/trafficserver,reveller/trafficserver,bryancall/trafficserver,persiaAziz/trafficserver,rahmalik/trafficserver,bryancall/trafficserver,chenglongwei/trafficserver,davidbz/trafficserver,dyrock/trafficserver,rpufky/trafficserver,SolidWallOfCode/trafficserver,persiaAziz/trafficserver,taoyunxing/trafficserver,SolidWallOfCode/trafficserver,davidbz/trafficserver,clearswift/trafficserver,clearswift/trafficserver,reveller/trafficserver,clearswift/trafficserver,vmamidi/trafficserver,clearswift/trafficserver,pbchou/trafficserver,persiaAziz/trafficserver,rpufky/trafficserver,reveller/trafficserver,taoyunxing/trafficserver,duke8253/trafficserver,clearswift/trafficserver,reveller/trafficserver,reveller/trafficserver,pbchou/trafficserver,duke8253/trafficserver,rahmalik/trafficserver,PSUdaemon/trafficserver,taoyunxing/trafficserver,clearswift/trafficserver,rahmalik/trafficserver,chitianhao/trafficserver,pbchou/trafficserver,taoyunxing/trafficserver,rahmalik/trafficserver,taoyunxing/trafficserver,rpufky/trafficserver,persiaAziz/trafficserver,chitianhao/trafficserver,bryancall/trafficserver,PSUdaemon/trafficserver,vmamidi/trafficserver,taoyunxing/trafficserver,duke8253/trafficserver