mod_cluster: continuous HTTP 400 on IPv6

<subsystem xmlns="urn:jboss:domain:modcluster:1.1">
    <mod-cluster-config advertise-socket="modcluster" connector="ajp">
        <dynamic-load-provider>
            <load-metric type="busyness"/>
        </dynamic-load-provider>
    </mod-cluster-config>
</subsystem>
+++
<socket-binding name="modcluster" port="0" multicast-address="[ff01::1]" multicast-port="23364"/>

<IfModule manager_module>
Listen [2620:52:0:105f::ffff:23]:8888
<VirtualHost [2620:52:0:105f::ffff:23]:8888>
   ServerName soa3
   ServerAlias *.soa3
  <Directory />
    Order deny,allow
    Deny from all
    Allow from all
  </Directory>
  AdvertiseGroup [ff01::1]:23364
  ServerAdvertise on
  KeepAliveTimeout 60
  MaxKeepAliveRequests 0
  ManagerBalancerName mbabaceksCluster
  AdvertiseFrequency 5
  EnableMCPMReceive
  <Location /mcm>
     SetHandler mod_cluster-manager
     Order deny,allow
     Deny from all
     Allow from all
  </Location>
</VirtualHost>
</IfModule>

<h1>mod_cluster/1.2.1.Final</h1><a href="/mcm?nonce=7bce83d1-f880-4b5a-a2e7-761f1450888f&refresh=10">Auto Refresh</a> <a href="/mcm?nonce=7bce83d1-f880-4b5a-a2e7-761f1450888f&Cmd=DUMP&Range=ALL">show DUMP output</a> <a href="/mcm?nonce=7bce83d1-f880-4b5a-a2e7-761f1450888f&Cmd=INFO&Range=ALL">show INFO output</a>
<h1> Node node1 (ajp://[2620:52:0:105f:0:0:ffff:22%4]:8018): </h1>
<a href="/mcm?nonce=7bce83d1-f880-4b5a-a2e7-761f1450888f&Cmd=ENABLE-APP&Range=NODE&JVMRoute=node1">Enable Contexts</a> <a href="/mcm?nonce=7bce83d1-f880-4b5a-a2e7-761f1450888f&Cmd=DISABLE-APP&Range=NODE&JVMRoute=node1">Disable Contexts</a><br/>
Balancer: mbabaceksCluster,LBGroup: ,Flushpackets: Off,Flushwait: 10000,Ping: 10000000,Smax: 1,Ttl: 60000000,Status: OK,Elected: 7,Read: 0,Transferred: 0,Connected: 0,Load: 100
<h2> Virtual Host 1:</h2><h3>Contexts:</h3><pre>/SessionTest, Status: ENABLED Request: 0 <a href="/mcm?nonce=7bce83d1-f880-4b5a-a2e7-761f1450888f&Cmd=DISABLE-APP&Range=CONTEXT&JVMRoute=node1&Alias=default-host&Context=/SessionTest">Disable</a>

[Wed Jun 06 11:29:31 2012] [debug] mod_proxy_ajp.c(579): proxy: got response from (null) (2620:52:0:105f:0:0:ffff:22%4)
[Wed Jun 06 11:29:31 2012] [debug] proxy_util.c(2029): proxy: AJP: has released connection for (2620:52:0:105f:0:0:ffff:22%4)
[Wed Jun 06 11:29:32 2012] [debug] mod_proxy_cluster.c(1948): proxy: byrequests balancer DONE (ajp://[2620:52:0:105f:0:0:ffff:22%4]:8018)
[Wed Jun 06 11:29:32 2012] [debug] mod_proxy.c(1020): Running scheme balancer handler (attempt 0)
[Wed Jun 06 11:29:32 2012] [debug] mod_proxy_http.c(1955): proxy: HTTP: declining URL ajp://[2620:52:0:105f:0:0:ffff:22%4]:8018/SessionTest/hostname
[Wed Jun 06 11:29:32 2012] [debug] mod_proxy_ajp.c(670): proxy: AJP: serving URL ajp://[2620:52:0:105f:0:0:ffff:22%4]:8018/SessionTest/hostname
[Wed Jun 06 11:29:32 2012] [debug] proxy_util.c(2011): proxy: AJP: has acquired connection for (2620:52:0:105f:0:0:ffff:22%4)
[Wed Jun 06 11:29:32 2012] [debug] proxy_util.c(2067): proxy: connecting ajp://[2620:52:0:105f:0:0:ffff:22%4]:8018/SessionTest/hostname to 2620:52:0:105f:0:0:ffff:22%4:8018
[Wed Jun 06 11:29:32 2012] [debug] proxy_util.c(2193): proxy: connected /SessionTest/hostname to 2620:52:0:105f:0:0:ffff:22%4:8018
[Wed Jun 06 11:29:32 2012] [debug] proxy_util.c(2444): proxy: AJP: fam 10 socket created to connect to 2620:52:0:105f:0:0:ffff:22%4
[Wed Jun 06 11:29:32 2012] [debug] ajp_utils.c(31): Into ajp_handle_cping_cpong
[Wed Jun 06 11:29:32 2012] [debug] ajp_utils.c(102): ajp_handle_cping_cpong: Done
[Wed Jun 06 11:29:32 2012] [debug] ajp_header.c(224): Into ajp_marshal_into_msgb
[Wed Jun 06 11:29:32 2012] [debug] ajp_header.c(290): ajp_marshal_into_msgb: Header[0] [Host] = [2620:52:0:105f:0:0:ffff:23:8888]
[Wed Jun 06 11:29:32 2012] [debug] ajp_header.c(290): ajp_marshal_into_msgb: Header[1] [Accept-Encoding] = [identity]
[Wed Jun 06 11:29:32 2012] [debug] ajp_header.c(450): ajp_marshal_into_msgb: Done
[Wed Jun 06 11:29:32 2012] [debug] mod_proxy_ajp.c(267): proxy: APR_BUCKET_IS_EOS
[Wed Jun 06 11:29:32 2012] [debug] mod_proxy_ajp.c(272): proxy: data to read (max 8186 at 4)
[Wed Jun 06 11:29:32 2012] [debug] mod_proxy_ajp.c(287): proxy: got 0 bytes of data
[Wed Jun 06 11:29:32 2012] [debug] ajp_header.c(687): ajp_read_header: ajp_ilink_received 04
[Wed Jun 06 11:29:32 2012] [debug] ajp_header.c(697): ajp_parse_type: got 04
[Wed Jun 06 11:29:32 2012] [debug] ajp_header.c(516): ajp_unmarshal_response: status = 400
[Wed Jun 06 11:29:32 2012] [debug] ajp_header.c(537): ajp_unmarshal_response: Number of headers is = 0
[Wed Jun 06 11:29:32 2012] [debug] ajp_header.c(687): ajp_read_header: ajp_ilink_received 05
[Wed Jun 06 11:29:32 2012] [debug] ajp_header.c(697): ajp_parse_type: got 05
[Wed Jun 06 11:29:32 2012] [debug] mod_proxy_ajp.c(579): proxy: got response from (null) (2620:52:0:105f:0:0:ffff:22%4)
[Wed Jun 06 11:29:32 2012] [debug] proxy_util.c(2029): proxy: AJP: has released connection for (2620:52:0:105f:0:0:ffff:22%4)
[Wed Jun 06 11:29:33 2012] [debug] mod_proxy_cluster.c(1948): proxy: byrequests balancer DONE (ajp://[2620:52:0:105f:0:0:ffff:22%4]:8018)