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    Check if you don't have a VPN or something like this messing with your connection. Also, check Jenkins DNS configurations (try to start it with "--dns 8.8.8.8".

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via Oracle Community by Mahalwar, 1 year ago
emea-proxy.uk.oracle.com
java.net.UnknownHostException: emea-proxy.uk.oracle.com	at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:178)	at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172)	at java.net.Socket.connect(Socket.java:579)	at java.net.Socket.connect(Socket.java:528)	at sun.net.NetworkClient.doConnect(NetworkClient.java:180)	at sun.net.www.http.HttpClient.openServer(HttpClient.java:432)	at sun.net.www.http.HttpClient$1.run(HttpClient.java:484)	at sun.net.www.http.HttpClient$1.run(HttpClient.java:482)	at java.security.AccessController.doPrivileged(Native Method)	at sun.net.www.http.HttpClient.privilegedOpenServer(HttpClient.java:481)	at sun.net.www.http.HttpClient.openServer(HttpClient.java:522)	at sun.net.www.protocol.https.HttpsClient.(HttpsClient.java:275)	at sun.net.www.protocol.https.HttpsClient.New(HttpsClient.java:371)