Remove documentation-only IP validation from DNS record checks

internal/provider/resource_dns_record.go

@@ -478,13 +478,6 @@ func validateDNSRecordContentForTypeWithKnowledge(recordType string, content *st
 			diagnostics.AddError("Invalid DNS record content", fmt.Sprintf("Record type %q requires an IPv6 address, got %q.", normalizedType, trimmedContent))
 			return false
 		}
-		if isDocumentationAddress(addr) {
-			diagnostics.AddError(
-				"Unsupported documentation IP address",
-				fmt.Sprintf("Dynu rejects documentation-only address ranges for live DNS records. Replace %q with a real routable address under your control.", trimmedContent),
-			)
-			return false
-		}
 		return true
 	}
 
@@ -511,22 +504,6 @@ func validateDNSRecordContentForTypeWithKnowledge(recordType string, content *st
 	return true
 }
 
-func isDocumentationAddress(addr netip.Addr) bool {
-	if addr.Is4() {
-		v4 := addr.As4()
-		return (v4[0] == 192 && v4[1] == 0 && v4[2] == 2) ||
-			(v4[0] == 198 && v4[1] == 51 && v4[2] == 100) ||
-			(v4[0] == 203 && v4[1] == 0 && v4[2] == 113)
-	}
-
-	if addr.Is6() {
-		v6 := addr.As16()
-		return v6[0] == 0x20 && v6[1] == 0x01 && v6[2] == 0x0d && v6[3] == 0xb8
-	}
-
-	return false
-}
-
 func resolveDynamicIntent(recordType string, content types.String, dynamic types.Bool, diagnostics *diag.Diagnostics) (bool, bool) {
 	normalizedType := strings.ToUpper(strings.TrimSpace(recordType))
 	contentPtr := stringPointerFromOptionalContent(content)

internal/provider/resource_dns_record_test.go

@@ -28,6 +28,11 @@ func TestParseDNSRecordIDInvalid(t *testing.T) {
 func TestValidateDNSRecordContentForType(t *testing.T) {
 	ipv4 := "8.8.8.8"
 	ipv6 := "2606:4700:4700::1111"
+	docIPv4A := "192.0.2.123"
+	docIPv4B := "198.51.100.123"
+	docIPv4C := "203.0.113.123"
+	docIPv6 := "2001:db8::123"
+	nonIP := "not-an-ip"
 	nonEmpty := "hello"
 	blank := ""
 
@@ -39,10 +44,16 @@ func TestValidateDNSRecordContentForType(t *testing.T) {
 		wantValid  bool
 	}{
 		{name: "A accepts static ipv4", recordType: "A", content: &ipv4, wantValid: true},
+		{name: "A accepts documentation ipv4 192.0.2.0/24", recordType: "A", content: &docIPv4A, wantValid: true},
+		{name: "A accepts documentation ipv4 198.51.100.0/24", recordType: "A", content: &docIPv4B, wantValid: true},
+		{name: "A accepts documentation ipv4 203.0.113.0/24", recordType: "A", content: &docIPv4C, wantValid: true},
+		{name: "A rejects non-ip", recordType: "A", content: &nonIP, wantValid: false},
 		{name: "A rejects ipv6", recordType: "A", content: &ipv6, wantValid: false},
 		{name: "A accepts dynamic nil", recordType: "A", content: nil, dynamic: true, wantValid: true},
 		{name: "A accepts dynamic blank", recordType: "A", content: &blank, dynamic: true, wantValid: true},
 		{name: "AAAA accepts static ipv6", recordType: "AAAA", content: &ipv6, wantValid: true},
+		{name: "AAAA accepts documentation ipv6 2001:db8::/32", recordType: "AAAA", content: &docIPv6, wantValid: true},
+		{name: "AAAA rejects non-ip", recordType: "AAAA", content: &nonIP, wantValid: false},
 		{name: "AAAA rejects ipv4", recordType: "AAAA", content: &ipv4, wantValid: false},
 		{name: "AAAA accepts dynamic nil", recordType: "AAAA", content: nil, dynamic: true, wantValid: true},
 		{name: "TXT requires content", recordType: "TXT", content: nil, wantValid: false},