Tests to examine:

open/test/jdk/java/net/ipv6tests/Tests.java
open/test/jdk/java/net/HugeDataTransferTest.java
open/test/jdk/java/net/NetworkInterface/IndexTest.java
open/test/jdk/java/net/NetworkInterface/Test.java
open/test/jdk/java/net/NetworkInterface/Equals.java
open/test/jdk/java/net/NetworkInterface/NetworkInterfaceStreamTest.java
open/test/jdk/java/net/Inet6Address/serialize/Inet6AddressSerializationTest.java
open/test/jdk/java/net/httpclient/websocket/PendingOperations.java
open/test/jdk/java/net/Inet4Address/PingThis.java
open/test/jdk/java/net/URLConnection/6212146/TestDriver.java
open/test/jdk/java/net/URL/OpenStream.java
open/test/jdk/java/net/DatagramSocket/InheritHandle.java
open/test/jdk/java/net/DatagramSocket/Send12k.java
open/test/jdk/java/net/MulticastSocket/TestInterfaces.java
open/test/jdk/java/net/MulticastSocket/SetOutgoingIf.java
open/test/jdk/java/net/MulticastSocket/Promiscuous.java
open/test/jdk/java/net/MulticastSocket/PromiscuousIPv6.java
open/test/jdk/java/net/MulticastSocket/NoLoopbackPackets.java
open/test/jdk/java/net/ServerSocket/AnotherSelectFdsLimit.java
open/test/jdk/java/net/ServerSocket/SelectFdsLimit.java
open/test/jdk/sun/net/www/protocol/file/FileURLTest.java
open/test/jdk/sun/net/www/http/HttpURLConnection/BasicNTLMAuthTest.java
open/test/jdk/com/sun/net/httpserver/simpleserver/jwebserver/CommandLinePortNotSpecifiedTest.java
open/test/jdk/com/sun/net/httpserver/simpleserver/jwebserver/MaxRequestTimeTest.java
open/test/jdk/com/sun/net/httpserver/simpleserver/jwebserver/CommandLineNegativeTest.java
open/test/jdk/com/sun/net/httpserver/simpleserver/jwebserver/CommandLinePositiveTest.java
open/test/jdk/com/sun/net/httpserver/simpleserver/CommandLinePortNotSpecifiedTest.java
open/test/jdk/com/sun/net/httpserver/simpleserver/CommandLineNegativeTest.java
open/test/jdk/com/sun/net/httpserver/simpleserver/CommandLinePositiveTest.java

Most of these tests probably only have conditional logic.