Releng JIPP not connecting to svc cluster

Summary

When attempting to run certain jobs on the releng jenkins pods are created but then encounter the error:

SEVERE: Failed to connect to http://jenkins-ui.releng.svc.cluster.local/releng/tcpSlaveAgentListener/: jenkins-ui.releng.svc.cluster.local

Steps to reproduce

Run one of the pipeline jobs:

• https://ci.eclipse.org/releng/job/AutomatedTests/job/ep427I-unit-cen64-gtk3-java17/
• https://ci.eclipse.org/releng/job/AutomatedTests/job/ep427I-unit-cen64-gtk3-java19/

Relevant logs and/or screenshots

• https://ci.eclipse.org/releng/job/AutomatedTests/job/ep427I-unit-cen64-gtk3-java19/50/console
• https://ci.eclipse.org/releng/job/AutomatedTests/job/ep427I-unit-cen64-gtk3-java17/51/console

java.io.IOException: Failed to connect to http://jenkins-ui.releng.svc.cluster.local/releng/tcpSlaveAgentListener/: jenkins-ui.releng.svc.cluster.local
	at org.jenkinsci.remoting.engine.JnlpAgentEndpointResolver.resolve(JnlpAgentEndpointResolver.java:214)
	at hudson.remoting.Engine.innerRun(Engine.java:745)
	at hudson.remoting.Engine.run(Engine.java:544)
Caused by: java.net.UnknownHostException: jenkins-ui.releng.svc.cluster.local
	at java.base/java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:229)
	at java.base/java.net.Socket.connect(Socket.java:609)
	at java.base/sun.net.NetworkClient.doConnect(NetworkClient.java:177)
	at java.base/sun.net.www.http.HttpClient.openServer(HttpClient.java:508)
	at java.base/sun.net.www.http.HttpClient.openServer(HttpClient.java:603)
	at java.base/sun.net.www.http.HttpClient.<init>(HttpClient.java:276)
	at java.base/sun.net.www.http.HttpClient.New(HttpClient.java:375)
	at java.base/sun.net.www.http.HttpClient.New(HttpClient.java:396)
	at java.base/sun.net.www.protocol.http.HttpURLConnection.getNewHttpClient(HttpURLConnection.java:1253)
	at java.base/sun.net.www.protocol.http.HttpURLConnection.plainConnect0(HttpURLConnection.java:1187)
	at java.base/sun.net.www.protocol.http.HttpURLConnection.plainConnect(HttpURLConnection.java:1081)
	at java.base/sun.net.www.protocol.http.HttpURLConnection.connect(HttpURLConnection.java:1015)
	at org.jenkinsci.remoting.engine.JnlpAgentEndpointResolver.resolve(JnlpAgentEndpointResolver.java:211)
	... 2 more

Priority

• Urgent
• High
• Medium
• Low

Severity

• Blocker
• Major
• Normal
• Low

Impact

(What is the impact of this issue? Is it blocking a release? Are there any time constraints?, for example: "We have a release tomorrow") Blocking tests