dns_allowed_type
if (!dns_allowed_type(limits, "NAME2ADDR") &&
!dns_allowed_type(limits, "NAME"))
if (!dns_allowed_type(limits, "ADDR2NAME") &&
!dns_allowed_type(limits, "ADDR"))
if (!dns_allowed_type(limits, "ADDR2NAME") &&
!dns_allowed_type(limits, "ADDR"))
if (!dns_allowed_type(limits, "NAME2ADDR") &&
!dns_allowed_type(limits, "NAME"))
if (!dns_allowed_type(oldlimits, type))