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Updated burp community edition broke burp

Ryan Oct 23, 2019 06:40PM UTC

I updated burpsuite community edition and now every connection generates "Host is down (connection failed)" and "java.net.socketexception: host is down (connect failed)" errors.

I am using Firefox 69.0.3 (64-bit) and
openjdk 11.0.2 2019-01-15
OpenJDK Runtime Environment 18.9 (build 11.0.2+9)
OpenJDK 64-Bit Server VM 18.9 (build 11.0.2+9, mixed mode)

I have removed and reinstalled the cert several times and it is not resolving this issue. There is no issue connecting to the internet without the proxy


Liam Tai-Hogan Oct 24, 2019 10:56AM UTC Support Center agent

Can you still access the application using a browser, not proxying through Burp?

If not – you need to speak to the application admin and ask them to bring it back online.

If you can – please try restarting Burp. You may need to start it with the option: java.net.preferIPv4Stack=true

Please let us know if you need any further assistance.


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