Can't load the editor in Firefox when Confluence Data Center is running in an IPv6 environment

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This Knowledge Base article was written specifically for the Atlassian Data Center platform. The contents of this article do not apply to Atlassian Server or Cloud applications.

Problem

Users see a 'Can't load the editor' error in Firefox when attempting to edit a page, and Confluence Data Center 6.9 (or later) is running in an IPv6 environment. 

Cause

This problem is caused by a raw IPv6 address being used for the Synchrony URL in the Synchrony startup script, for example:

start-synchrony.sh
# URL that the browser uses to contact Synchrony 
#SYNCHRONY_URL="http://[1234:dal:698:7d01:20ce:53f8:bcf0:ab1d]:8091/synchrony"

and in Confluence's bin/setenv file. 

setenv.sh
#CATALINA_OPTS="-Dsynchrony.service.url=http://[1234:dal:698:7d01:20ce:53f8:bcf0:ab1c]:8091/synchrony/v1 ${CATALINA_OPTS}"

The examples above are for Linux, but the same applies in Windows environments. 

Workaround

To avoid this problem, you will need to specify the DNS hostname for Synchrony, instead of using the raw IPv6 address. 

  1. Stop Confluence and Synchrony. 
  2. Edit the start-synchrony.sh / start-synchrony.bat script, and specify the DNS hostname for Synchrony. Here's an example:

    Linux
    # URL that the browser uses to contact Synchrony
    SYNCHRONY_URL="http://confluence-ipv6.examplesite.com:8091/synchrony"
    Windows
    rem URL that the browser uses to contact Synchrony
    set SYNCHRONY_URL=http://confluence-ipv6.examplesite.com:8091/synchrony
  3.  Edit <confluence-install-directory>/bin/setenv.sh or setenv.bat and update the synchrony.service.url system property:

    Linux
    CATALINA_OPTS="-Dsynchrony.service.url=http://confluence-ipv6.examplesite.com:8091/synchrony/v1 ${CATALINA_OPTS}"
    Windows
    set CATALINA_OPTS=http://confluence-ipv6.examplesite.com:8091/synchrony/v1 %CATALINA_OPTS%
  4. Restart Synchrony, then restart Confluence. 


Last modified on Apr 26, 2018

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