dns_rdata_opt_current, dns_rdata_txt_first,
dns_rdata_txt_next and dns_rdata_txt_current were
documented but not implemented. These have now been
implemented.
dns_rdata_spf_first, dns_rdata_spf_next and
dns_rdata_spf_current were document but not
implemented. The prototypes for these
functions have been removed. [RT #38068]
4023. [bug] win32: socket handling with explict ports and
invoking named with -4 was broken for some
configurations. [RT #38068]
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