Linting fix

conn.go

@@ -65,10 +65,13 @@ const (
 )
 
 var (
-	errNoPositiveMTUFound = errors.New("no positive MTU found")
-	errNoPacketConn       = errors.New("must supply at least a multicast IPv4 or IPv6 PacketConn")
-	errNoUsableInterfaces = errors.New("no usable interfaces found for mDNS")
-	errFailedToClose      = errors.New("failed to close mDNS Conn")
+	errNoPositiveMTUFound                 = errors.New("no positive MTU found")
+	errNoPacketConn                       = errors.New("must supply at least a multicast IPv4 or IPv6 PacketConn")
+	errNoUsableInterfaces                 = errors.New("no usable interfaces found for mDNS")
+	errFailedToClose                      = errors.New("failed to close mDNS Conn")
+	errFailedToDecodeAddrFromAResource    = errors.New("failed to decode netip.Addr from A type Resource")
+	errFailedToDecodeAddrFromAAAAResource = errors.New("failed to decode netip.Addr from AAAA type Resource")
+	errUnhandledAnswerHeaderType          = errors.New("header for Answer had unhandled type")
 )
 
 type netInterface struct {
@@ -1163,7 +1166,6 @@ func (c *Conn) start(started chan<- struct{}, inboundBufferSize int, config *Con
 	}
 }
 
-//nolint:all
 func addrFromAnswerHeader(answer dnsmessage.Resource) (*netip.Addr, error) {
 	switch answer.Header.Type {
 	case dnsmessage.TypeA:
@@ -1175,7 +1177,7 @@ func addrFromAnswerHeader(answer dnsmessage.Resource) (*netip.Addr, error) {
 			}
 		}
 
-		return nil, fmt.Errorf("failed to create netip.Addr from TypeA resource")
+		return nil, errFailedToDecodeAddrFromAResource
 	case dnsmessage.TypeAAAA:
 		if a, ok := answer.Body.(*dnsmessage.AAAAResource); ok {
 			addr, ok := netip.AddrFromSlice(a.AAAA[:])
@@ -1184,9 +1186,9 @@ func addrFromAnswerHeader(answer dnsmessage.Resource) (*netip.Addr, error) {
 			}
 		}
 
-		return nil, fmt.Errorf("failed to create netip.Addr from TypeAAAA resource")
+		return nil, errFailedToDecodeAddrFromAAAAResource
 	default:
-		return nil, fmt.Errorf("unhandled resource type in answer")
+		return nil, errUnhandledAnswerHeaderType
 	}
 }