`wsrep_sst_receive_address` defaults to `wsrep_node_address`.

When `wsrep_node_address` is set to an IPv6 address and `wsrep_sst_receive_address` is not set or set to its default value of 'AUTO', `wsrep_node_address`'s IPv6 address does not seem to be parsed correctly. SST fails with:

rsync: b6d:982:1aae:565:478:828:f51: invalid numeric value (in daemon mode)

I have not tested this with another SST method than rsync. Omitting brackets around the IPv6 address in `wsrep_node_address` does not make a difference.

Non-functional config:

wsrep_node_address = '[fc00:b6d:982:1aae:565:478:828:f51]'

wsrep_sst_receive_address = 'AUTO'

Functional config:

wsrep_node_address = '[fc00:b6d:982:1aae:565:478:828:f51]'

wsrep_sst_receive_address = '[fc00:b6d:982:1aae:565:478:828:f51]:4444'