ON JBPAPP-2013 Dominik Pospisil reports the IPv6 address parsing fix in 2.4.6 doesn't handle TCPPING:

Both

<TCPPING initial_hosts="::1[7810],fec0::f101:21a:a0ff:fea0:d745[7810]" port_range="3" timeout="3000" down_thread="false" up_thread="false" num_initial_members="3"/>

and

<TCPPING initial_hosts="[::1][7810],[fec0::f101:21a:a0ff:fea0:d745][7810]" port_range="3" timeout="3000" down_thread="false" up_thread="false" num_initial_members="3"/>

fails with:

16:57:56,443 ERROR [TCPPING] exeption is java.lang.NumberFormatException: For input string: "::1"
16:57:56,443 ERROR [TCPPING] exeption is java.lang.NumberFormatException: For input string: "fec0::f101:21a:a0ff:fea0:d745"